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automotive power data sheet rev. 1.1, 2011-06-06 TLE6251-3G high speed can-transceiver with wake and failure detection
data sheet 2 rev. 1.1, 2011-06-06 TLE6251-3G 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 high speed can physical layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 normal operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.2 receive-only mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3 stand-by mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.4 go-to-sleep command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5.5 sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 wake-up functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.1 remote wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.2 local wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.3 mode change via the en and nstb pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7 fail safe features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.1 can bus failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.2 local failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.2.1 txd time-out feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.2.2 txd to rxd short circuit feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.2.3 rxd permanent recessive clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.2.4 bus dominant clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.2.5 over-temperature detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.3 under-voltage detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.3.1 under-voltage event on v cc and v io . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.3.2 under-voltage event on v s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.4 voltage adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8 diagnosis-flags at nerr and rxd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 9 general product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 9.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 9.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 9.3 thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 10 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 10.1 functional device characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 10.2 diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 11 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 11.1 application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 11.2 esd robustness according to iec61000-4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 11.3 voltage drop over the inh output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 11.4 mode change to sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 11.5 further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 12 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 13 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 table of contents
pg-dso-14 type package marking TLE6251-3G pg-dso-14 TLE6251-3G data sheet 3 rev. 1.1, 2011-06-06 high speed can-transceiver with wake and failure detection TLE6251-3G 1overview features ? hs can transceiver with data transmission rates up to 1 mbaud ? compliant to iso 11898-5 ? very low power consumption in sleep mode ? bus wake-up and local wake-up ? inhibit output to control external circuitry ? separate v io input to adapt different micro controller supply voltages ? separate output for failure diagnosis ? optimized for low electromagnetic emission (eme) ? optimized for a high immunity agains t electromagnetic interference (emi) ? very high esd robustness, 9 kv according to iec 61000-4-2 ? protected against automotive transients ? receive-only mode for node failure analysis ? txd time-out function and rxd recessi ve clamping with failure indication ? txd to rxd short circuit recognition with failure indication ? canh and canl short circuit recognition with failure indication ? bus dominant clamping diagnosis ? under-voltage detection at v cc , v io and v s ? power-up and wake-up source recognition ? short circuit proof and over-temperature protection ? green product (rohs compliant) ? aec qualified description as a successor of the tle6251g, the TLE6251-3G is designed to provide an excellent passive behavior in power down. this feature makes the TLE6251-3G extremely suitable for mixed power supply hs-can networks. the TLE6251-3G provides different operation modes with a very low quiescent current in sleep mode. based on the high symmetry of the canh and canl signals, the TLE6251-3G provides a very low level of electromagnetic emission (eme) within a broad frequency range. the TLE6251-3G is integrated in a rohs compliant pg-dso-14 package and fulfills or exceeds the requirements of the iso11898-5. the tle6251g and the TLE6251-3G are fully pin compatible and function compatible. based on the infineon smart power technology spt ? , the TLE6251-3G provides industry leading esd robustness together with a very high electromagnetic immunity (emi). the infineon smart power technology spt ? allows bipolar and cmos control circuitry in acco rdance with dmos power devices to exist on the same monolithic circuit. the TLE6251-3G and the infineon spt ? technology are aec qualified and tailored to withstand the harsh conditions of the automotive environment.
data sheet 4 rev. 1.1, 2011-06-06 TLE6251-3G block diagram 2 block diagram figure 1 block diagram rxd driver temp.- protection txd 1 nstb en nerr 8 v io 7 inh wake-up comparator 13 canh 12 wk 3 v cc 10 v s 11 n.c. 2 gnd normal receiver 9 mode control logic + timeout diagnosis & failure logic wake-up detection rxd output control output stage canl low power receiver v cc /2 v s v io v io 4 5 14 6
TLE6251-3G pin configuration data sheet 5 rev. 1.1, 2011-06-06 3 pin configuration 3.1 pin assignment figure 2 pin configuration 3.2 pin definitions and functions 9 table 1 pin definitions and functions pin symbol function 1txd transmit data input; integrated pull-up resistor to v io , ?low? for ?dominant? state. 2gnd ground 3 v cc transceiver supply voltage; 100 nf decoupling capacitor to gnd recommend. 4rxd receive data output; ?low? in ?dominant? state. output voltage level dependent on the v io supply 5 v io logic supply voltage; digital supply voltage for the logic pins txd, rxd, en, nerr and nstb; usually connected to the supply voltage of the external microcontroller; 100 nf decoupling capacitor to gnd recommend. 6en mode control input; integrated pull-down resistor; ?high? for normal operation mode. txd 1 2 3 4 5 6 78 gnd v cc rxd nstb canh canl n.c. v io en inh v s wk nerr 9 10 11 12 13 14
data sheet 6 rev. 1.1, 2011-06-06 TLE6251-3G pin configuration 7inh inhibit output; open drain output to cont rol external circuitry; high impedance in sleep mode 8nerr error flag output; failure and wake-up indication output, active ?low? output voltage level depends on the v io supply 9wk wake-up input; local wake-up input; wake-up input sensitive to a level change in both directions, ?high? to ?low? and vice versa. 10 v s battery voltage supply; 100 nf decoupling capacitor to gnd recommend. 11 n.c. not connected; 12 canl can bus low level i/o; ?low? in ?dominant? state 13 canh can bus high level i/o; ?high? in ?dominant? state 14 nstb stand-by control input; integrated pull-down resistor; ?high? for normal operation mode. table 1 pin definitions and functions pin symbol function
TLE6251-3G functional description data sheet 7 rev. 1.1, 2011-06-06 4 functional description can is a serial bus system that connects microcontrollers , sensor and actuators for real-time control applications. the usage of the c ontrol a rea n etwork (abbreviated can) within road vehi cles is described by the international standard iso 11898. according to the 7 layer osi reference model the physical layer of a can bus system specifies the data transmission from one can node to a ll other available can nodes inside the network. the physical layer specification of a can bus system includes all electrical and mechanical specifications of a can network. the can transceiver is part of the physical laye r specification. several diffe rent physical layer standards of can networks have been developed over the last years. the TLE6251-3G is a high speed can transceiver with dedicated wake-up functions. high speed can tran sceivers with wake-up functions are defined by the international standard iso 11898-5. 4.1 high speed c an physical layer figure 3 high speed can bus signals and logic signals v cc can_h can_l txd v io = logic supply v cc = transceiver supply txd = input from the microcontroller rxd = output to the microcontroller canh = voltage on canh input/output canl = voltage on canl input/output v diff = differential voltage v diff = v canh C v canl rxd v diff dominant recessive v io v io t t t t v diff = iso level dominant v diff = iso level recessive
data sheet 8 rev. 1.1, 2011-06-06 TLE6251-3G functional description the TLE6251-3G is a high speed can transceiver, operating as an interface between the can controller and the physical bus medium. a h igh s peed can network (abbreviated hs can) is a two wire differential network which allows data transmission rates up to 1 mbaud. characteri stic for a hs can network are the two can bus states ?dominant? and ?recessive? (see figure 3 ). a hs can network is a carrier sense multiple access network with collision detect ion. this means, every participant of the can network is a llowed to place its message on the same bus media simultaneously. this can cause data collisions on the bus, whic h might corrupt the inform ation content of the data stream. in order avoid the loss of any information and to prioritize the messages, it is essential that the ?dominant? bus signal overrules the ?recessive? bus signal. the input txd and the output rxd are connected to the microcontroller of the ecu. as shown in figure 1 , the hs can transceiver TLE6251-3G has a receive unit and a output stage, allowing the transceiver to send data to the bus medium and monitor the data from the bus medium at the same time. the hs can TLE6251-3G converts the serial data stream available on the transmit data in put txd into a differential output signal on can bus. the differential output signal is provided by the pins canh and canl. the receiver stage of the TLE6251-3G monitors the data on the can bus and conv erts them to a serial data stream on t he rxd pin. a logical ?low? signal on the txd pin creates a ?dominant? signal on the can bus, followed by a logi cal ?low? signal on the rxd pin (see figure 3 ). the feature, broadcasting data to the can bus and listening to the data traffic on the can bus simultaneous is essential to support the bit to bit arbitration on can networks. the voltage levels for a hs can on the bus medium are def ined by the iso 11898-2/-5 standards. if a data bit is ?dominant? or ?recessive?, this depends on the voltage difference between canh and canl: v diff = v canh - v canl to transmit a ?dominant? signal to the can bus the differential signal v diff is larger or equal to 1.5 v. to receive a ?recessive? signal from the can bus the differential signal v diff is smaller or equal to 0.5 v. the voltage level on the digital input txd and the digital ou tput rxd is determined by the power supply level at the pin v io . depending on voltage level at the v io pin, the signal levels on the logic pins (en, nerr, nstb, txd and rxd) are compatible to micr ocontrollers with 5 v or 3.3 v i/o supply. usually the v io power supply of the transceiver is connected to sa me power supply as i/o power supply of the microcontroller. partially supplied can networ ks are networks where the participants have a different power supply status. some nodes are powered up, other nodes are not powered, or some other nodes are in a low-power mode, like sleep mode for example. regardless on the supply status of the hs can node, each partic ipant which is connected to the common bus, shall not disturb the communication on th e bus media. the TLE6251-3G is designed to support partially supplied networks. in power do wn condition, the resistors of the normal receiver are switched off and the bus input on the pins canh and canl is high resistive.
TLE6251-3G operation modes data sheet 9 rev. 1.1, 2011-06-06 5 operation modes five different operation modes are available on tle6251- 3g. each mode with specific characteristics in terms of quiescent current, data transmission or failure diagnostic. for the mode selection the digital input pins en and nstb are used. both digital input pins are event triggered. figure 4 illustrates the different mode changes depending on the status of the en and nstb pins. a mode change via the mode selections pins en and nstb is only possible if the power supplies v cc , v io and v s are activated. figure 4 operation modes under-voltage on v s v s < v s,poff en nstb inh normal operation mode on 1 1 en nstb inh stand-by mode on 0 0 en nstb inh receive only mode on 1 0 en nstb inh sleep mode off 0 0 go-to-sleep command en nstb inh 0 1on power down under-voltage on v cc start C up supply v s supply v cc within t < t uv(vcc) supply v io within t < t uv(vio) under-voltage on v io en -> 1 nstb -> 1 en -> 0 nstb -> 0 en = 1 nstb -> 0 en = 1 nstb ->1 en = 0 nstb -> 0 en = 0 nstb -> 1 en -> 0 nstb = 1 en -> 1 nstb = 1 en -> 1 nstb -> 0 en -> 0 nstb -> 1 en -> 1 nstb = 0 en -> 0 t < t hslp nstb = 0 en -> 0 t > t hslp nstb = 0 t hslp timing important for mode selection en = 0 nstb -> 1 v cc & v io on en -> 1 nstb -> 1 v cc & v io on wake-up event bus-wake: t > t busdom local-wake: t > t wake v io < v io,uv t > t uv(vio) v cc < v cc,uv t > t uv(vcc) v s > v s,pon
data sheet 10 rev. 1.1, 2011-06-06 TLE6251-3G operation modes in sleep mode the power supply v cc and the logic power supply v io are usually turned off. a wake-up event, via the can bus or the local wake-up pin, shifts th e device from sleep mode into stand-by mode. the following operations mode are available on the TLE6251-3G: ? normal operation mode ? receive-only mode ? stand-by mode ? sleep mode ? go-to-sleep command depending on the operation mode, the output driver stage, the receiver stage and the bus biasing are active or inactive. table 2 shows the different operation modes depending on the logic signal on the pins en and nstb with the related status of the inh pin and the bus biasing. 5.1 normal operation mode in normal operation mode the hs can transceiver tle625 1-3g sends the serial data stream on the txd pin to the can bus while at the same time the data available on the can bus is monitored on the rxd output pin. in normal operation mode all functions of the TLE6251-3G are active: ? the output stage is active and driv es data from the txd to the can bus. ? the normal receiver unit is active and provi des the data from the can bus to the rxd pin. ? the low power receiver and the bu s wake-up function is inactive. ? the local wake-up pin is disabled. ? the inh pin is connected to v s . ? the rxd pin is ?low? for a ?dominant? bus signal and ?high? for a ?recessive? bus signal? ? the bus basing is set to v cc /2. ? the failure detection is active and failu res are indicated at the nerr pin. (see chapter 8 ). ? the under-voltage detection on the all 3 power supplies v cc , v io and v s is active. the hs can transceiver TLE6251-3G enters normal operation mode by setting the mode selection pins en and nstb to logical ?high? (see table 2 or figure 4 ). 5.2 receive-only mode the receive-only mode can be used to test the connection of the bus me dium. the TLE6251-3G can still receive data from the bus, but the output stage is disabled and therefore no data can be sent to the can bus. all other functions are active: ? the output stage is disabled and da ta which is available on the txd pin will be blocked and not communicated to the can bus. ? the normal receiver unit is active and provides the da ta which is available on the can bus to the rxd pin. ? the inh pin is connected to v s . ? the rxd pin is ?low? for a ?dominant? bus signal and ?high? for a ?recessive? bus signal. ? the bus biasing is set to v cc /2. table 2 overview operation modes operation mode en nstb inh bus bias normal operation 1 1 v s v cc /2 receive-only 0 1 v s v cc /2 stand-by 0 0 v s gnd go-to-sleep 1 0 v s gnd sleep 0 0 floating gnd power down 0 0 floating floating
TLE6251-3G operation modes data sheet 11 rev. 1.1, 2011-06-06 ? the low power receiver and the bu s wake-up function is inactive. ? the local wake-up pin wk is disabled. ? the failure diagnostic is active and loca l failures are indicated at the nerr pin (see chapter 8 ). ? the under-voltage detection on the all 3 power supplies v cc , v io and v s is active. the hs can transceiver TLE6251-3G enters receive-only mode by setting the en pin to logical ?low? and the nstb to logical ?high? (see table 2 or figure 4 ). 5.3 stand-by mode after the power-up sequence the TLE6251-3G enters automa tically into stand-by mode. stand-by mode is an idle mode of the TLE6251-3G with optimized power consumpt ion. in stand-by mode the TLE6251-3G can not send or receive any data. the out put driver stage and the normal receiver unit are disabled. both can bus pins, canh and canl are connected to gnd. the following functions are available in stand-by mode: ? the output stage is disabled. ? the normal receiver unit is disabled. ? the low power receiver is active and monitors the can bus. in case of a message on the can bus the TLE6251-3G sets an internal wake-up flag. if the power supplies v cc and v io are active, the wake-up event is indicated by the rxd pin and the nerr pin (see chapter 8 ). ? the local wake-up pin is active and a local wake-up ev ent is indicated by the rxd and nerr pin, if the power supplies v cc and v io are active (see chapter 8 ). ? the inh output is active and set to v s . ? through the internal resistors r i (see figure 1 ), the pins canh and canl are connected to gnd. ? if the power supplies v cc and v io are active, the rxd pin indicates the wake-up events. ? the txd pin is disabled ? the failure diagnostic is disabled. ? the under-voltage detection on the all 3 power supplies v cc , v io and v s is active. ? the TLE6251-3G detects a power-up event and indicates it at the nerr pin (see chapter 8 ). there are several ways to enter the stand-by mode (see figure 4 ): ? after the start-up sequence the device enters per de fault stand-by mode. mode changes are only possible if v cc and v io are present. ? the device is in sleep mode and a wake-up event occurs. ? the device is in the go-to-sleep command and the en pin goes low before the time t < t hslp has expired. ? the device is in normal operation mode or receive-on ly mode and the en pin and nstb pin are set to logical ?low?. ? an under-voltage event occurs on the power supply v s . in case of an under-voltage event, the TLE6251-3G device always changes to stand-by mode regard less in which mode the device currently operates.
data sheet 12 rev. 1.1, 2011-06-06 TLE6251-3G operation modes 5.4 go-to-sleep command the go-to-sleep command is a transition mode allowing ex ternal circuitry like a microcontroller to prepare the ecu for the sleep mode. the TLE6251-3G stays in the go-to-sleep command for the maximum time t = t hslp , after exceeding the time t hslp the device changes into sleep mode. a mode change into sleep mode is only possible via the go-to-sleep command. during the go-to-sleep command the following functions on the TLE6251-3G are available: ? the output driver stage is disabled. ? the normal receiver unit is disabled. ? the low power receiver is active and monitors the can bus. in case of a message on the can bus the TLE6251-3G sets an internal wake-up flag. ? the local wake-up pin is active and can detect a local wake-up event. ? the inh output is active and set to v s . ? through the internal resistors r i (see figure 1 ), the pins canh and canl are connected to gnd. ? the txd pin is disabled. ? the failure diagnostic is disabled. ? the under-voltage detection on all 3 power supplies v cc , v io and v s is active. setting the nstb pin to logical ?low?, while the en si gnal remains at logical ?high?, activates the go-to-sleep command. the go-to-sleep command can be entered from normal operation mode, receive-only mode and from stand-by mode. 5.5 sleep mode the sleep mode is a power save mode. in sleep mode the current consumption of the TLE6251-3G is reduced to a minimum while the device is still able to wake-up by a message on the can bus or a local wake-up event on the pin wk. most of the functions of the TLE6251-3G are disabled: ? the output driver stage is disabled. ? the normal receiver unit is disabled. ? the low power receiver is active and monitors the can bus. in case of a message on the can bus the TLE6251-3G changes from sleep mode to stand -by mode and sets an internal wake-up flag. ? the local wake-up pin is active and in case of a signal change on the wk pin the operation mode changes to stand-by mode. ? the inh output is floating. ? through the internal resistors r i (see figure 1 ), the pins canh and canl are connected to gnd. ? if the power supplies v cc and v io are present, the rxd pin indicates the wake-up event. ? the txd pin is disabled ? the under-voltage detection on the power supply v s is active and sends the device into stand-by mode in case of an under-voltage event. there are only two ways to enter sleep mode: ? the device can activate the sleep mode via the mode control pins en and nstb. ? an under-voltage event on the power supplies v cc and v io changes the operation mode to sleep mode.
TLE6251-3G operation modes data sheet 13 rev. 1.1, 2011-06-06 in order to enter the stand-by mode or the sleep mode, th e en signal needs to be set to logical ?low? a defined time after the nstb pin was set to lo gical ?low?. important for the mode sele ction is the timing between the falling edge of the nstb signal and t he en signal. if the logical signal on the en pin goes low before the transition time t < t hslp has been reached, the TLE6251-3G enters into sta nd-by mode and the inh pin remains connected to the v s supply. in the case the logical signal on the en pin goes low after the transition time t > t hslp , the TLE6251-3G enters into sleep mode simultaneous with the expiration of the time window t hslp and the inh becomes disconnected from the v s supply and is floating. (see figure 5 ). figure 5 entering sleep mode or stand-by mode the signal on the can bus has no impact to mode changes. the operation mode can be changed regardless if the can bus is ?dominant? or ?recessive?. en nstb inh t < t hslp go-to sleep command stand-by mode normal operation mode t hslp en nstb inh t > t hslp go-to sleep command sleep mode normal operation mode t hslp t t t t t t
data sheet 14 rev. 1.1, 2011-06-06 TLE6251-3G wake-up functions 6 wake-up functions there are several possib ilities for a mode change from sleep mode to another operation mode. ? remote wake-up via a message on the can bus. ? local wake-up via a signal change on the pin wk. ? a status change of the logical signals app lied to the mode control pins en and nstb. ? an under-voltage detection on the v s power supply. in typical applications the power supplies v cc and v io are turned off in sleep mode, meaning a mode change can only be caused by an external event, also called wake-up. in case the v cc and v io power supply are available, a mode change can be simple caused by changing th e status on the mode control pins en and nstb. 6.1 remote wake-up a remote wake-up or also called bus wake-up occurs via a can bus message and changes the operation mode from sleep mode to stand-by mode. a signal change from ?recessive? to ?dominant?, followed by a ?dominant? signal for the time t > t wake initiates a bus wake-up (see figure 6 ). figure 6 remote wake-up in case the time of the ?dominant? signal on the can bus is shorter than the filtering time t wake , no bus wake-up occurs. the filter time is implemented to protect th e hs can transceiver TLE6251-3G against unintended bus wake-up?s, triggered by spikes on the can bus. the signal change on the can bus from ?recessive? to ?dominant? is mandatory, a permanent ?dominant? signal would not activate any bus wake-up. in stand-by mode the rxd output pin and the nerr output pin display the can bus wake-up event by a logical ?low? signal (details see chapter 8 ). once the hs can transceiver TLE6251-3G has recognized the wake-up event and has changed to stand-by mode, the inh outp ut pin becomes active an d provides the voltage v s to the external circuitry. canh canl inh t > t wake go-to sleep command stand-by mode normal operation mode t t sleep mode ?recessive to ?dominant change t < t wake no wake-up wake-up
TLE6251-3G wake-up functions data sheet 15 rev. 1.1, 2011-06-06 6.2 local wake-up the TLE6251-3G can be activated from sleep mode by a signal change on the wk pin, also called local wake- up. designed to withstand voltages up to 40 v the wk pin can be directly connected to v s . the internal logic on the wk pin works bi-sensitive, meanin g the wake-up logic on the pin wk triggers on a both signal changes, from ?high? to ?low? and from ?low? to ?high? (see figure 7 ). figure 7 local wake - up a filter time t wk(local) is implemented to protect the TLE6251-3G ag ainst unintended wake-up?s, caused by spikes on the pin wk. the threshold values v wk,h and v wk,l depend on the level of the v s power supply. in stand-by mode the rxd output pin and the nerr output pin display the can bus wake-up event by a logical ?low? signal (details see chapter 8 ). once the hs can transceiver TLE6251-3G has recognized the wake-up event and has changed to stand-by mode, the inh outp ut pin becomes active an d provides the voltage v s to the external circuitry. v wk inh t > t wk(local) stand-by mode t t sleep mode wake-up t < t wk(local) no wake-up v wk inh t > t wk(local) stand-by mode t t sleep mode wake-up t < t wk(local) no wake-up stand-by mode sleep mode v wk,h v wk,l
data sheet 16 rev. 1.1, 2011-06-06 TLE6251-3G wake-up functions 6.3 mode change via th e en and nstb pin besides a mode change issued by a wake-up event, th e operation mode on the TLE6251-3G can be changed by changing the signals on the en and nstb pins. therefore the power supplies v cc and v io have to be active. according to the mode diagram in figure 4 the operation mode can be changed directly from sleep mode to the receive-only mode, normal operation mode. a change from sleep mode direct to stand-by mode is only possible via a wake-up event. for example by setting the nstb pin and the en pin to logical ?high? the TLE6251-3G changes from sleep mode to normal operation mode (see figure 8 ). the pins en and nstb have a hysteresis between the logi cal ?low? and the logical ?high? signal in order to avoid any toggling during the operation mode change. figure 8 wake-up via mode change en inh t t v m,h v m,l nstb t v m,h v m,l sleep mode normal operation mode go-to-sleep command sleep mode t hslp t mode t mode
TLE6251-3G fail safe features data sheet 17 rev. 1.1, 2011-06-06 7 fail safe features 7.1 can bus failure detection the high speed can transceiver TLE6251-3G is equipped with a bus failure detection unit. in normal operation mode the TLE6251-3G can dete ct the following bus failures: ? canh shorted to gnd ? canl shorted to gnd ? canh shorted to v cc ? canl shorted to v cc ? canh shorted to v s ? canl shorted to v s the TLE6251-3G can not detect the bus failures: ? canh open ? canl open ? canh short to canl the TLE6251-3G detects the bus failures while sending a ?dominant? signal to the can bus. after sending four ?dominant? bits to the can bus, a logical ?low? on th e nerr pins indicates the can bus failure. for the failure indication the ?dominant? bits require a minimum pulse width of 4 s. in case the TLE6251-3G detects an can bus failure, the failure is only indicated by the nerr pin, the transceiver doesn?t stop or block the communication, by disabling the output stage for example. figure 9 can bus failure canh short to v cc 1) 1) the communication on the can bus could st ill be possible even with a short canh to v cc or canh to v s . if the can bus communication is possible or not, depends on parameters like the number of part icipants inside the can network, the network termination, etc. this figure shows a working ca n bus communication as an example and it shall not be considered as a liability that on hs can networks the can bus communication continues in every can bus failure case. txd t t canh canl short to v cc rxd t nerr t four dominant bits
data sheet 18 rev. 1.1, 2011-06-06 TLE6251-3G fail safe features 7.2 local failures if a local failure occurs during the operation of the tle625 1-3g, the devices sets an internal local failure flag. the local failure flag can be displayed to the microcontr oller during the receive-only mode and the failures are indicated by a logical ?low? signal on the nerr pin. the following local failures can be detected: ? txd time-out ? txd to rxd short ? rxd permanent recessive clamping ? bus dominant clamping ? over-temperature detection 7.2.1 txd time-out feature the txd time-out feature protects the can bus against pe rmanent blocking in case the logical signal on the txd pin is continuously ?low?. in normal operation mode, a logical ?low? signal on the txd input pin for the time t > t txd enables the txd time- out feature and the TLE6251-3G disa bles the output driver stage. in receive-only mode the TLE6251-3G indicates the txd time-out by a logical ?low? signal on the nerr pin (see figure 10 ). to release the output driver stage after the permanent ?low? signal on the txd input pin dis appears, a mode change from receive-only mode to normal operation mode is required. figure 10 txd time-out feature txd t canh canl rxd nstb t txd time-out en nerr normal operation mode normal operation mode receive-only mode txd timeCout released output stage released t t t t = t txd
TLE6251-3G fail safe features data sheet 19 rev. 1.1, 2011-06-06 7.2.2 txd to rxd short circuit feature a short between the pins txd and rxd causes permanent blocking of the can bus. in the case, that the low side driver capability of the rxd ou tput pin is stronger as the high side driver capability of the external microcontroller output, which is connected to the txd pin of the TLE6251-3G, the rxd output signal overrides the txd signal provided by the microcontroller. in this case a continuous ?dominant? signal blocks the can bus. the tle6251- 3g detects the short between the txd and the rxd pin, disables the output driver stage and sets the internal local failure flag. in receive-only mode the TLE6251-3G indicates the txd to rxd short by a logical ?low? signal on the nerr pin. the TLE6251-3G releases the failure flag an d the output driver stage by an operation mode change from receive-only mode to normal operation mode. 7.2.3 rxd permanent recessive clamping a logical ?high? signal on the rxd pin indicates the exter nal microcontroller, that there is no can message on the can bus. the microcontroller can transmit a message to the can bus only if the bus is recessive. in case the logical ?high? signal on the rxd pin is c aused by a failure, like a short from rxd to v io , the rxd signal doesn?t mirror the signal on the can bus. this allows the microc ontroller to place a message to the can bus at any time and corrupts can bus messages on the bus. the tle6251- 3g detects a permanent logical ?high? signal on the rxd pin and set the local error flag. in order to avoid any data collisions on the can bus the output driver stage gets disabled. in receive-only mode the TLE6251-3G indicates the rxd clamping by a logical ?low? signal on the nerr pin. the TLE6251-3G releases the failure flag and the output driver stage by a operation mode change or if the rxd clamping failure disappears. 7.2.4 bus dominant clamping due to a fail function on one of the can bus participants, the can bus could be permanent in ?dominant? state. the external microcontroller doesn?t transmit any data to the can bus as long as the can bus remains ?dominant?. even if the permanent ?dominate? state on the can bus is caused by a short from canh to v cc , or similar, the transceiver can not detect the failure, because the can bus failure detection works only when the transceiver is active sending data to the bus. therefore the TLE6251-3G has a bus domina nt clamping detection unit installed. in case the bus signal is ?dominant? for the time t > t bus,t the TLE6251-3G detects the bus clamping and sets the local failure flag. the output driver stage remains active. in receive-only mode the TLE6251-3G indicates the bus dominant clamping by a logical ?low? signal on the nerr pin.
data sheet 20 rev. 1.1, 2011-06-06 TLE6251-3G fail safe features 7.2.5 over-temperature detection the output driver stage is protect ed against over temperature. exceeding the shutdown temperature results in deactivation of the output driving stag e. to avoid any toggling after the device cools down, the output driver stage is enabled again only after a ?recessive? to ?dominant? signal change on the txd pin (see figure 11 ). an over-temperature event only deactivates the output driver stage, the TLE6251-3G doesn?t change its operation mode in this failure case. the over - temperature event is indicated by a logical ?low? signal on the nerr pin in receive-only mode. figure 11 release of the transmission after an over-temperature event 7.3 under-voltage detection the TLE6251-3G provides a power supply mo nitoring on all three power supply pins: v cc , v io and v s . in case of an under - voltage event on any of this three power supplies, the TLE6251-3G changes the operation mode and sets an internal failure flag. the internal failure flag is not indicated by the nerr output pin. 7.3.1 under-voltage event on v cc and v io an under-voltage event on the power supply v cc or the power supply v io causes the change of the operation mode to sleep mode, regardless of the operation mode in whic h the TLE6251-3G might currently operate. the logical signals on the digital input pins en and nstb are also disregarded. after the power supplies v cc and v io are activated again, the operation mode can be changed the usual way. from sleep mode to stand-by mode by a wake-up event or from sleep mode direct to normal oper ation mode, receive-only mode by the digital input pins en and nstb. txd t canh canl rxd normal operation mode t t t temp. output-stage release thermal shutdown temp. t jsd thermal shutdown hysteresis t j cool down
TLE6251-3G fail safe features data sheet 21 rev. 1.1, 2011-06-06 the under-voltage monitoring on the power supply v cc and v io is combined with an internal filter time. only if the voltage drop on each of these two powe r supplies is longer present as the time t drop > t uv(vio) ( t drop > t uv(vcc) ) the operation mode change will be activated (see figure 12 ). under-voltage events on the power supplies v cc or v io are not indicated by the ne rr pin nor by the rxd pin. figure 12 under-voltage on v io or v cc inh normal operation mode / receiveConly mode / standCby mode or go-to sleep command t t v cc sleep mode v cc,uv t < t uv(vcc) t > t uv(vcc) inh t t v io v io,uv t < t uv(vio) t > t uv(vio) normal operation mode / receiveConly mode / standCby mode or go-to sleep command sleep mode
data sheet 22 rev. 1.1, 2011-06-06 TLE6251-3G fail safe features 7.3.2 under-voltage event on v s if an under-voltage event is detected at the power supply v s , the TLE6251-3G immediately transfers into the stand-by mode, regardless of the operation mode in wh ich the TLE6251-3G might currently operate. after the power supply v s has been reestablished, the operation mode ca n be changed by applying a logical ?high? signal to the en pin or the nstb pin. in the case the TLE6251-3G detects an under-voltage event on the v cc or v io power supply, the TLE6251-3G changes to sleep mode. if the TLE6251-3G detects in sleep mode an under-voltage event on the v s power supply, the device changes to the stand-by mode , even if the under-voltage event on the v cc or v io power supply is still present. figure 13 under-voltage on v s 7.4 voltage adaptation the advantage of the adaptive microcontroller logic is the ratio metrical scaling of the i/o levels depending on the input voltage at the v io pin. connecting the v io input to the i/o supply of the mi crocontroller ensures, that the i/o voltage of the microcontroller fits to the internal logic levels of the TLE6251-3G. t v s any mode v s,poff v s,pon power down stand-by mode
TLE6251-3G diagnosis-flags at nerr and rxd data sheet 23 rev. 1.1, 2011-06-06 8 diagnosis-flags at nerr and rxd table 3 truth table nstb en inh mode event nerr rxd 1 1 high normal no can bus failure 1) 1) only valid after at least four recessive to dominant edges at txd when entering the normal operation mode. 1 ?low?: bus dominant, ?high?: bus recessive can bus failure 1) 0 wake-up via can bus/no wake-up request detected 2) 2) only valid before four recessive to dominant edges at txd when entering the normal operation mode. 1 wake-up via pin wk 3) 3) only valid before four recessive to dominant edges at txd when entering the normal operation mode. 0 1 0 high receive only no v s fail detected 4) 4) power-up flag only available, if v cc and v io are active. power-up flag will be cleared when entering normal operation mode. 1 ?low?: bus dominant, ?high?: bus recessive v s fail detected 4) 0 no txd time-out, over-temperature event, rxd recessive clamping or bus dominant time out detected 5) 5) valid after a transition fr om normal operation mode. 1 txd time-out, over-temperature event, rxd recessive clamping or bus dominant time out detected 5) 0 0 0 high stand-by wake-up request detected 6) 6) only valid if v cc and v io are active. 00 no wake up request detected 6) 11 0 0 floating sleep wake-up request detected 6) 00 no wake-up request detected 6) 11
data sheet 24 rev. 1.1, 2011-06-06 TLE6251-3G general product characteristics 9 general product characteristics 9.1 absolute maximum ratings note: stresses above the ones listed here may cause perm anent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: integrated protection functions are designed to prevent ic destruction under fault conditions described in the data sheet. fault conditions are considered as ?outside? normal operating range. protection functions are not designed for continuous repetitive operation. table 4 absolute maximum ratings 1) all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) 1) not subject to production test, specified by design. pos. parameter symbol limit values unit conditions min. max. voltages 9.1.1 supply voltage v s -0.3 40 v ? 9.1.2 transceiver supply voltage v cc -0.3 6.0 v ? 9.1.3 logic supply voltage v io -0.3 6.0 v ? 9.1.4 canh dc voltage versus gnd v canh -40 40 v ? 9.1.5 canl dc voltage versus gnd v canl -40 40 v ? 9.1.6 input voltage at wk v wk -27 40 v ? 9.1.7 input voltage at inh v inh -0.3 v s + 0.3 v ? 9.1.8 differential voltage canh to canl v diff,can -40 40 v max. differential voltage between can and canl 9.1.9 logic voltages at en, nstb, nerr, txd, rxd v logic -0.3 v io v0 v< v io < 6.0 v currents 9.1.10 maximum output current inh i inh(max) -5 0 ma ? temperatures 9.1.11 junction temperature t j -40 150 c? 9.1.12 storage temperature t stg -55 150 c? esd susceptibility 9.1.13 esd resistivity at canh, canl, and wk versus gnd v esd -8 8 kv hbm 2) (100 pf / 1.5 k ) 2) esd susceptibility, hbm according to aec-q100-002d. 9.1.14 esd resistivity all other pins v esd -2 2 kv hbm 2) (100 pf / 1.5 k )
TLE6251-3G general product characteristics data sheet 25 rev. 1.1, 2011-06-06 9.2 functional range note: within the functional range the ic operates as de scribed in the circuit description. the electrical characteristics are specifi ed within the conditions given in the re lated electrical ch aracteristics table. 9.3 thermal resistance table 5 operating range pos. parameter symbol limit values unit conditions min. max. supply voltages 9.2.1 supply voltage range for normal operation v s(nom) 5.5 18 v ? 9.2.2 extended supply voltage range for operation v s(ext) 5.0 40 v parameter deviations possible 9.2.3 transceiver supply voltage v cc 4.75 5.25 v ? 9.2.4 logic supply voltage v io 3.0 5.25 v ? thermal parameters 9.2.5 junction temperature t j -40 150 c 1) 1) not subject to production test, specified by design table 6 thermal characteristics 1) 1) not subject to production test, specified by design pos. parameter symbol limit values unit conditions min. typ. max. thermal resistance 9.3.1 junction to soldering point 1) r thjsp ? ? 25 k/w measured to pin 2 9.3.2 junction to ambient 1) r thja ? 130 ? k/w 2) 2) eia/jesd 52_2, fr4, 80 80 1.5 mm; 35 cu, 5 sn; 300 mm 2 thermal shutdown junction temperature 9.3.3 thermal shutdown temp. t jsd 150 175 190 c ? 9.3.4 thermal shutdown hysteresis t?10?k?
data sheet 26 rev. 1.1, 2011-06-06 TLE6251-3G electrical characteristics 10 electrical characteristics 10.1 functional device characteristics table 7 electrical characteristics 4.75 v < v cc < 5.25 v; 3.0 v < v io < 5.25 v; 5.5 v < v s <18v; r l = 60 ; normal mode; -40 c < t j < 150 c; all voltages with respect to ground; pos itive current flowing into pin; unless otherwise specified. pos. parameter symbol limit values unit conditions min. typ. max. current consumption 10.1.1 current consumption in normal operation mode on v cc and v io i cc+vio ? 6 10 ma ?recessive? state; txd = ?high? i cc+vio ? 50 80 ma ?dominant? state; txd = ?low? 10.1.2 current consumption in receive-only mode on v cc and v io i cc+vio ?610ma? 10.1.3 current consumption in stand- by mode on v s i vs ?4570 a v s = wk = 12 v v cc = v io = 5v 10.1.4 current consumption in stand- by mode on v cc and v io i cc+vio ?2.510 a v s = v wk = 12 v v cc = v io = 5v 10.1.5 current consumption in sleep mode on v s i vs ?2030 a v s = 12 v, t j < 85 c, v cc = v io = 0 v 10.1.6 current consumption in sleep mode on v cc and v io i cc+vio ?2.510 a v s = 12 v, t j < 85 c, v cc = v io = 5v supply resets 10.1.7 v cc under-voltage detection v cc,uv 234 v? 10.1.8 v io under-voltage detection v io,uv 1.5 2.5 2.8 v ? 10.1.9 v s power on detection level v s,pon 245 v? 10.1.10 v s power off detection level v s,poff 23.55 v? receiver output rxd 10.1.11 h i g h l e v e l o u t p u t c u r r e n t i rd,h ?-4-2ma v rxd = 0.8 v x v io 10.1.12 l o w l e v e l o u t p u t c u r r e n t i rd,l 24? ma v rxd = 0.2 v x v io
TLE6251-3G electrical characteristics data sheet 27 rev. 1.1, 2011-06-06 transmission input txd 10.1.13 high level input range v td,h 0.7 v io ? v io + 0.3 v v ?recessive? state 10.1.14 low level input range v td,l - 0.3 ? 0.3 v io v ?dominant? state 10.1.15 high level input current i td -5 0 5 a v txd = v io 10.1.16 t x d p u l l - u p r e s i s t a n c e r td 10 20 40 k ? mode control inputs en, nstb 10.1.17 high level input range v m,h 0.7 v io ? v io + 0.3 v v ?recessive? state 10.1.18 low level input range v m,l - 0.3 ? 0.3 v io v ?dominant? state 10.1.19 l o w l e v e l i n p u t c u r r e n t i md -5 0 5 a v en and v nstb = 0v 10.1.20 p u l l - d o w n r e s i s t a n c e r m 50 100 200 k ? diagnostic output nerr 10.1.21 high level output voltage v nerr,h 0.8 v io ?? ma i nerr = -100 a 10.1.22 low level output voltage v nerr,l ??0.2 v io ma i nerr = 1.25 a wake input wk 10.1.23 high level voltage range at wk v wk,h v s - 2 v ? v s + 3v v v en =v nstb = 0 v, rising edge 10.1.24 l o w l e v e l v o l t a g e r a n g e a t w k v wk,l - 27 ? v s - 4v v v en =v nstb = 0 v, falling edge 10.1.25 high level input current i wkh -10 -5 ? a v wk = v s - 2 v 10.1.26 l o w l e v e l c u r r e n t i wkl ?510 a v wk = v s - 4 v inhibit output inh 10.1.27 high level voltage drop v h = v s - v inh v h ?0.40.8v i inh = -1 ma ?0.81.6v 1) i inh = -5 ma 10.1.28 leakage current i inh,lk ??5 a sleep mode; v inh = 0 v table 7 electrical characteristics (cont?d) 4.75 v < v cc < 5.25 v; 3.0 v < v io < 5.25 v; 5.5 v < v s <18v; r l = 60 ; normal mode; -40 c < t j < 150 c; all voltages with respect to ground; pos itive current flowing into pin; unless otherwise specified. pos. parameter symbol limit values unit conditions min. typ. max.
data sheet 28 rev. 1.1, 2011-06-06 TLE6251-3G electrical characteristics bus transmitter 10.1.29 canl and canh recessive output voltage v canl/h 2.0 ? 3.0 v normal operation mode no load 10.1.30 canl and canh recessive output voltage v canl/h -0.1 ? 0.1 v sleep or stand-by mode no load 10.1.31 canh to canl recessive output voltage difference v diff -500 ? 50 mv v txd = v io ; no load 10.1.32 canl dominant output voltage v canl 0.5 ? 2.25 v v txd = 0 v; 50 < r l < 65 10.1.33 canh dominant output voltage v canh 2.75 ? 4.5 v v txd = 0 v; 50 < r l < 65 10.1.34 canh, canl dominant output voltage difference v diff 1.5 ? 3.0 v v txd = 0 v; 50 < r l < 65 10.1.35 c a n l s h o r t c i r c u i t c u r r e n t i canlsc 50 80 200 ma v canlshort = 18 v 10.1.36 c a n h s h o r t c i r c u i t c u r r e n t i canhsc -200 -80 -50 ma v canhshort = 0 v 10.1.37 leakage current i canhl,lk -5 0 5 a v s = v io = v cc = 0 v; 0 v < v canh,l < 5 v bus receiver 10.1.38 d i f f e r e n t i a l receiver input range - dominant v diff,rdn 0.9 ? 5.0 v normal operation mode, in respect to cmr 10.1.39 d i f f e r e n t i a l receiver input range - recessive v diff,drn -1.0 ? 0.5 v normal operation mode, in respect to cmr 10.1.40 d i f f e r e n t i a l receiver input range - dominant v diff,rdl 1.15 ? 5.0 v sleep mode, stand-by mode in respect to cmr 10.1.41 d i f f e r e n t i a l receiver input range - recessive v diff,drl -1.0 ? 0.4 v sleep mode, stand-by mode in respect to cmr 10.1.42 c o m m o n m o d e r a n g e c m r - 1 2 ? 1 2 v v cc = 5 v 10.1.43 d i f f e r e n t i a l r e ceiver hysteresis v diff,hys ?100? mv? 10.1.44 canh, canl input resistance r i 10 20 30 k ?recessive? state 10.1.45 differential input resistance r diff 20 40 60 k ?recessive? state table 7 electrical characteristics (cont?d) 4.75 v < v cc < 5.25 v; 3.0 v < v io < 5.25 v; 5.5 v < v s <18v; r l = 60 ; normal mode; -40 c < t j < 150 c; all voltages with respect to ground; pos itive current flowing into pin; unless otherwise specified. pos. parameter symbol limit values unit conditions min. typ. max.
TLE6251-3G electrical characteristics data sheet 29 rev. 1.1, 2011-06-06 dynamic can-transceiver characteristics 10.1.46 p r o p a g a t i o n d e l a y txd-to-rxd low (?recessive? to ?dominant?) t d(l),tr ? 150 255 ns c l = 100 pf; v cc = v io = 5 v; c rxd = 15 pf 10.1.47 p r o p a g a t i o n d e l a y txd-to-rxd high (?dominant? to ?recessive?) t d(h),tr ? 150 255 ns c l = 100 pf; v cc = v io = 5 v; c rxd = 15 pf 10.1.48 p r o p a g a t i o n d e l a y txd low to bus ?dominant? t d(l),t ?50120ns c l = 100 pf; v cc = v io = 5 v; c rxd = 15 pf 10.1.49 p r o p a g a t i o n d e l a y txd high to bus ?recessive? t d(h),t ?50120ns c l = 100 pf; v cc = v io = 5 v; c rxd = 15 pf 10.1.50 p r o p a g a t i o n d e l a y bus ?dominant? to rxd ?low? t d(l),r ? 100 135 ns c l = 100 pf; v cc = v io = 5 v; c rxd = 15 pf 10.1.51 p r o p a g a t i o n d e l a y bus ?recessive? to rxd ?high? t d(h),r ? 100 135 ns c l = 100 pf; v cc = v io = 5 v; c rxd = 15 pf 10.1.52 min. hold time go to sleep command t hslp 82550 s? 10.1.53 m i n . w a k e - u p t i m e o n p i n w k t wk(local) 51020 s? 10.1.54 min. ?dominant? time for bus wake-up t wake 0.75 3 5 s? 10.1.55 txd permanent ?dominant? disable time t txd 0.3 0.6 1.0 ms ? 10.1.56 b u s p e r m a n e n t t i m e - o u t t bus,t 0.3 0.6 1.0 ms ? 10.1.57 v cc , v c undervoltage filter time t uv(vio) t uv(vcc) 200 320 480 ms ? 10.1.58 t i m e f o r m o d e c h a n g e t mode ?20? s 1) 1) not subject to production test, specified by design. table 7 electrical characteristics (cont?d) 4.75 v < v cc < 5.25 v; 3.0 v < v io < 5.25 v; 5.5 v < v s <18v; r l = 60 ; normal mode; -40 c < t j < 150 c; all voltages with respect to ground; pos itive current flowing into pin; unless otherwise specified. pos. parameter symbol limit values unit conditions min. typ. max.
data sheet 30 rev. 1.1, 2011-06-06 TLE6251-3G electrical characteristics 10.2 diagrams figure 14 test circuit for dynamic characteristics figure 15 timing diagrams for dynamic characteristics 5 gnd 2 4 14 6 1 9 wk 10 canh r l v io nstb en txd rxd 3 v cc 100 nf 100 nf = = v cc v s 100 nf 13 12 canl c l c rxd v io t d(l),r t v diff t d(l),tr t d(h),r t d(h),tr t d(l),t t gnd v txd v io t d(h),t 0.9 v 0.5 v t gnd 0.2 x v io 0.8 x v io v rxd v io
TLE6251-3G application information data sheet 31 rev. 1.1, 2011-06-06 11 application information note: the following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. 11.1 application example figure 16 application circuit example ecu ecu micro controller e.g. xc22xx gnd TLE6251-3G wk 9 gnd 2 100 nf 100 nf 100 nf 10 k canh 13 1) 51 h canl 12 v s n.c. 11 inh 7 10 100 nf e.g. tle 4476 (3.3/5 v) or tle 4471 tle 4276 tle 4271 gnd v s 6 14 8 en nstb nerr 4 rxd 1 txd 5 v io 3 v cc v q2 inh v i1 + 22 f + 22 f 5 v 100 nf + 22 f v q1 stb 8 rxd 4 txd 1 3 v cc gnd 2 canh 7 1) 51 h canl 6 split 5 e. g. tle 4270 v q v i gnd micro controller e.g. xc22xx gnd 100 nf 100 nf + 22 f 5 v 100 nf + 22 f 60 can bus 60 v bat 4.7 nf 1) 60 60 4.7 nf 1) 1) optional, according to the car manufacturer requirements tle6251ds
data sheet 32 rev. 1.1, 2011-06-06 TLE6251-3G application information 11.2 esd robustness acco rding to iec61000-4-2 test for esd robustness according to iec61000-4-2 ?gun test? (150 pf, 330 ) have been performed. the results and test conditions are available in a separate test report. 11.3 voltage drop over the inh output figure 17 inh output voltage drop versus output current (typical values only!) table 8 esd robustness according to iec61000-4-2 performed test result unit remarks electrostatic discharge voltage at pin v s , canh, canl and wk versus gnd 9kv 1) positive pulse 1) esd susceptibility ?esd gun? according to ?gift ict ev aluation of can transceiver ?s ection 4.3. (iec 61000-4-2: 2001-12) -tested by external test house (ibee zwickau, emc testreport nr. 07a-04-09 referenced to the tle6251-2g). electrostatic discharge voltage at pin v s , canh, canl and wk versus gnd ? 9kv 1) negative pulse voltage drop on the inh output pin 0,00 1,00 0,00 1,00 2,00 3,00 4,00 5,00 inh output current (ma) voltage drop (v) t j = 150c t j = 25c t j = -40c
TLE6251-3G application information data sheet 33 rev. 1.1, 2011-06-06 11.4 mode change to sleep mode mode changes are applied either by a host command, an wake-up event or by an under-voltage event. to trigger a mode change by a host command or in other words by a signal change on the digital input pins en and nstb all power supplies, v s v io and v cc need to be available.TLE6251-3G. by setting the en pin to logical ?high? and the nstb pi n to logical ?low?, the TLE6251-3G enters the go-to-sleep command and after the time t = t hslp expires, the TLE6251-3G enters into the sleep mode (see chapter 5.5 ). for any mode change, also for a mode change to sleep mode the TLE6251-3G disregards the signal on the can bus. therefore the TLE6251-3G can enter sleep mode and remain in sleep mode even if there is a short circuit on the can bus, for example canh shorted to v s or v cc . in order to recognize a remote wake-up, the tle62 51-3g requires a signal change from ?recessive? to ?dominant? before the wake-u p filter time starts (see figure 6 and figure 18 ). figure 18 mode change to sleep while the canh bus is ?dominant? 11.5 further application information ? please contact us for information regarding the pin fmea. ? existing app. note ? for further information you may contact http://www.infineon.com/transceiver canh canl inh t = t wake go-to sleep command normal operation mode t t sleep mode no wake-up wake-up nstb en t t t = t hslp ?recessive to ?dominant change t = t wake stand-by mode rxd t
data sheet 34 rev. 1.1, 2011-06-06 TLE6251-3G package outlines 12 package outlines figure 19 pg-dso-14 (plastic dual small outline pg-dso-14-24) green product (rohs compliant) to meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). gps09033 for further information on alternativ e packages, please vi sit our website: http://www.infineon.com/packages . dimensions in mm
TLE6251-3G revision history data sheet 35 rev. 1.1, 2011-06-06 13 revision history revision date changes 1.1 2011-05-23 update data sheet rev.1. 1 based on data sheet rev. 1.0: ? all pages: correct spelling and grammar. ? update cover page, with new infineon logo. ? page 7, figure 3: updated. ? page 9, figure 4: updated. ? page 18, figure 10: updated. ? page 20, figure 11, updated. ? page 22, figure 13, updated. ? page 25, table 5, pos. 9.2.1: new supply voltage range v s(nom) from 5.5 v to 18 v. ? page 25, table 5, pos. 9.2.2: new extended supply voltage range v s(nom) from 5.0 v to 40 v. ? page 26ff, table 7, update table title: new supply range 5.5 v < v s <18v. ? page 29, table 7, pos. 10.1.58: changed to typical value. ? page 30, figure 15: updated. ? page 33, table 8: change algebraic sign of the negative pulse ? page 33: add new chapter 11.4
edition 2011-06-06 published by infineon technologies ag 81726 munich, germany ? 2005 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies compon ents may be used in life-su pport devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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