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mlx80020 enhanced lin transceiver mlx80020 C datasheet page 1 of 26 3901080020 nove mber 2015 rev 00 6 features ? compatible to lin physical layer specification rev.2.x and sae j2602 ? baud rate up to 20 kbaud ? wide operating voltage range v s = 5 to 27 v ? very low standby current consumption of 10 a in sleep mode ? bus and local wake up capable with source reco gnition ? control output for voltage regulator with low on C resistance for switchable master termination ? low eme(emission) and high emi(immunity) level ? fully compatible to 3.3v and 5v devices ? integrated termination resistor for lin slave nodes ? txd dominant time out function ? s leep timer to guarantee the most power saving mode after p ower on or wake up in case of faulty passive micro controller ? high impedance bus pin in case of loss of ground and undervoltage condition ? bus short to ground protection ? enhanced e sd robustness according to iec 61000 - 4 - 2 ? rohs compliant and aecq - 100 qualified ordering code product code temperature code package code option code packing form code mlx80020 k dc bba - 000 tu mlx80020 k dc bba - 000 re mlx800 20 k dc baa - 000 tu mlx80020 k dc baa - 000 re legend : temperature code: k for temperature range - 40c to 125c package code: dc for soic150 mil option code: bba - 000 for sae j2602, baa - 000 for lin 2.x packing form: re for reel, tu for tube ordering example: mlx80020kdc - bba - 000 - tu general description the mlx80020 is a physical layer device for a single wire data link capable of operating in applications using baud rates from 1kbd to 20kbd. the mlx80020 is comp ati ble to lin2. x as we ll as to the sae j2602 specifications . because of the very low power consumption of the mlx80020 in the sleep mode its suitable for ecu applications with hard standby current requirements. the implemented high resistive termination in s leep mode as well as the driving capability of the inh pin allows a comfortable handling of lin short circuits to gnd. in order to reduce the power consumption in case of failure modes, the integrated sleep timer takes care for switching the ecu into the m ost power saving sleep mode after p ower o n or w ake u p events that are not followed by a mode change response of the microcontroller. the mlx80020 has an improved emi performance and esd robustness. the mlx80020 version with the ordering code extension a is suitable for applications with baud rates up to 20k b d. the version of the mlx80020 with the ordering code extension b is optimized for baud rates up to 10.4k b d as specified in the sae j2602 standard. mlx 80020 1 2 3 4 8 7 6 5 rxd gnd txd en inh vs lin wake
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 2 of 26 3901080020 nove mber 2015 rev 00 6 contents 1. functional diagram ................................ ................................ ................................ .... 4 2. pin description ................................ ................................ ................................ ........... 5 3. electrical specification ................................ ................................ .............................. 6 3.1 operating conditions ................................ ................................ ............................. 6 3.2 absolute maximum ratings ................................ ................................ ................... 6 3.3 static characteristics ................................ ................................ ............................. 7 3.4 dynamic characteristics ................................ ................................ ...................... 10 4. functional description ................................ ................................ ............................. 11 4.1 operating modes ................................ ................................ ................................ . 11 4.2 initialization and standby mode ................................ ................................ ........... 12 4.3 normal mode ................................ ................................ ................................ ....... 12 4.4 sleep mode ................................ ................................ ................................ ......... 16 4.5 wake up ................................ ................................ ................................ .............. 16 4.6 wake up source recognition ................................ ................................ .............. 16 5. fail - safe fe atures ................................ ................................ ................................ ...... 18 5.1 loss of battery ................................ ................................ ................................ ..... 18 5.2 loss of ground ................................ ................................ ................................ .... 18 5.3 short ci rcuit to battery ................................ ................................ .......................... 18 5.4 short circuit to ground ................................ ................................ ......................... 18 5.5 thermal overload ................................ ................................ ................................ . 18 5.6 undervoltage lock out ................................ ................................ .......................... 18 5.7 open circuit protection ................................ ................................ ........................ 18 6. application hints ................................ ................................ ................................ ...... 19 6.1 application circuitry ................................ ................................ ............................. 19 7. mechanical specification soic8 ................................ ................................ ............. 20 8. tape and reel specification ................................ ................................ .................... 21 8.1 tape specification ................................ ................................ ............................... 21 8.2 reel specification ................................ ................................ ................................ 22 9. esd/emc remarks ................................ ................................ ................................ ... 23 9.1 general remarks ................................ ................................ ................................ 23 9.2 esd - test ................................ ................................ ................................ ............. 23 9.3 emc ................................ ................................ ................................ .................... 23
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 3 of 26 3901080020 nove mber 2015 rev 00 6 10. standard information regarding manufacturability of melexis products with different soldering processes ................................ ................................ ......................... 24 11. revision history ................................ ................................ ................................ .... 25 12. disclaimer ................................ ................................ ................................ .............. 26 list of figures figure 1: block diagram ................................ ................................ ................................ ......................... 4 figure 2: pin description soic8 package ................................ ................................ ............................... 5 figure 3: state diagram of the mlx80020 ................................ ................................ ........................... 12 figure 4 - duty cycle measurem ent and calculation in accordance to lin physical layer specification 2.x for baud rates up to 20kbps ................................ ................... 14 figure 5 - duty cycle measurement and calculation in accordance to lin physical layer specification 2.x for baud rates of 10.4kbps or below ................................ ...... 15 figure 6: remote wake - up behavior ................................ ................................ ................................ .... 17 figure 7: application circuitry ................................ ................................ ................................ ............... 19
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 4 of 26 3901080020 nove mber 2015 rev 00 6 1. functional diagram figure 1 : block diagram
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 5 of 26 3901080020 nove mber 2015 rev 00 6 2. pin description figure 2 : pin description soic8 package pin name io - typ e description 1 rxd o received data from lin bus, low in dominant state 2 en i mode control pin, e nables the normal operation mode when high 3 wake i high voltage input for local wake up, negative edge triggered 4 txd i /o transmit data input (low = dominant), active low after local wake up 5 gnd g ground 6 bus i/o lin bus transmitter/receiver pin, (low = dominant) 7 vs p battery supply voltage 8 inh o control output for voltage regulator, termination pin for master pull up mlx 80020 1 2 3 4 8 7 6 5 rxd gnd txd en inh vs lin wake
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 6 of 26 3901080020 nove mber 2015 rev 00 6 3. electrical specification all voltages are referenced to ground (gnd). positive currents flow into the ic. 3.1 operating conditions parameter symbol min max unit battery supply voltage [1] v s 7 18 v high battery supply voltage v s_s 18 27 v low battery supply voltage v s_l 5 7 v operating ambient temperature t amb - 40 +125 c [1] vs is the ic supply voltage including voltage drop of reverse battery protection diode, v drop = 0.4 to 1 v, v bat_ecu voltage range is 8 to 1 8v 3.2 absolute maximum ratings in accordance with the maximum rating system (iec 60134). the a bsolute maximum ratings given in the table below are limiting values that do not lead to a permanent damage of the device but exceeding any of these limits may do so. long term exposu re to limiting values may affect the reliability of the device. parame ter symbol condition min max unit battery supply voltage v s respective to gnd - 0.3 4 0 v transients at battery supply voltage v vs.tr1 iso 7637/2 pulse 1 [1] - 100 v transients at battery supply voltage v vs.tr2 iso 7637/2 pulse 2 [1] 75 v transients at high voltage signal pins v lin..tr1 iso 7637/3 pulses 1 [2] - 3 0 v transients at high voltage signal pins v lin..tr2 iso 7637/3 pulses 2 [2] 30 v transients at high voltage signal and power supply pins v hv..tr3 iso 7637/2 pulses 3a, 3b [3] - 15 0 1 00 v dc voltage lin , wake v lin_dc respective to gnd and v s loss of ground( v gnd =v s ) - 27 40 v dc voltage inh v inh_dc - 0.3 v s + 0.3 v dc voltage low voltage i/os (rxd,txd,en) v lv_dc - 0.3 7 v esd voltage v esd_iec iec 61000 - 4 - 2 pin lin, vs , to gnd, wake - 6 6 kv v esd_hbm hbm ( aec - q100 - 002 ) pin lin, vs to gnd , wake , inh all other pins - 8 - 2 8 2 kv kv v esd_cdm cdm ( aec - q100 - 011 ) - 100 0 100 0 v
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 7 of 26 3901080020 nove mber 2015 rev 00 6 parame ter symbol condition min max unit maximum latch - up free current at any pin i latch - 500 500 ma thermal impedance ? ja in free air 152 k/w storage temperature t stg - 55 150 c junction temperature t vj - 40 150 c [1] iso 7637/2 test pulses are applied to vs via a reverse polarity diode and >2 uf blocking capacitor. [2] iso 7637/3 test pulses are applied to lin via a coupli ng capacitance of 100nf. [3] iso 7637/3 test pulses are applied to lin via a coupling capacitance of 1nf. iso 7637/2 test pulses are applied to vs via a reverse polarity diode and >10uf blocking capacitor 3.3 static characteristics unless otherwise specified all values in the following tables are valid for v s = 5 to 27 v and t j = - 40 to 15 0 c. typical values are valid for v s = 12v and t amb = 25c. all voltages are referenced to ground (gnd), positive currents are flow into the ic. parameter symbol condition min typ max unit pin vs power on reset v s_por 2.4 4 .8 v power on reset hysteresis v s_por_hys 0.1 0.3 0.7 v undervoltage lockout v s_uv 4 .2 4.9 v undervoltage lockout hysteresis v s_uv_hys 0.1 0.3 0.7 v supply current, sleep mode i ssl v en = 0v, v wake = v s = v lin <14v 3 9 20 a supply current standby mode i sby v en = 0v, after por or wu 300 8 00 20 00 a supply current normal mode, dominant i sd v en = 5v, v txd = 0v 1 3 5 ma supply current normal mode, recessive i sr v en = 5v, v txd = 5v 300 8 00 200 0 a pin lin C transmitter short circuit bus current i bus_lim v lin = v s , v en = 5v,v txd = 0v 40 200 ma pull up resistance bus, normal & standby mode r slave 20 60 k? pull up current bus, sleep mode i bus _sleep v lin = 0, v s = 12v, v en = 5v, v txd = 5v - 100 - 20 a input leakage current at the receiver incl. pull - up resistor i bus_pas_dom v lin =0v ,v s =12v, v en = 5v, v txd = 5v - 6 00 a bus reverse current, recessive i bus_pas_rec v lin =18v, v s =5v, v en = 5v, v txd = 5v, tamb<125c 2 0 a bus reverse current loss of battery [2] i bus_no_bat v s = 0v, 0v < v lin < 18v tamb<125c 2 0 a bus current during loss of ground [2] i bus_no_gnd v s = 12v, 0 < v lin < 18v - 10 0 2 0 a transmitter dominant voltage [2] v olbus r load = 500 ? 0 0.2 v s v
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 8 of 26 3901080020 nove mber 2015 rev 00 6 parameter symbol condition min typ max unit transmitter recessive voltage [2] v ohbus no load, v en = 0/5v,v txd = 5v 0.8 v s v s v bus input capacitance [1] c bus pulse response via 10k ? , v pulse = 12v, vs open 25 35 pf voltage drop serial diode [3] v serdiode 0.4 1.0 v pin lin C receiver receiver dominant voltage v illin 0.4 *v s v receiver recessive voltage v ihlin 0.6 *v s v center point of receiver threshold v ilin_ cnt v lin_ cnt = ( v illin _ + v ihlin )/2 0.475 *v s 0.5 * v s 0.525 *v s v receiver hysteresis v ilin_ hys v lin_ cnt = ( v ihlin - v illin ) 0.175 *v s v pin en high level input voltage v ih_en rising edge 2 v low level input voltage v il_en falling edge 0.8 v hysteresis v ihys_en 0.05 0.1 0.3 v pul l down resistor r pd_en v en = 5v 1 00 350 600 k ? leakage current v leak_en v en = 0v - 5 5 a pin txd high level input voltage v ih_txd rising edge 2 v low level input voltage v il_txd falling edge 0.8 v hysteresis v ihys_txd 0.05 0.1 0.3 v pull down r esistor r pd_txd v txd = 5v 1 00 350 600 k ? low level output voltage v ol_rxd i txd = 2ma 0.4 v leakage current v leak_txd v txd = 0v - 5 5 a pin rxd low level output voltage v ol_rxd i rxd = 2ma 0.4 v leakage current high v leak_rxd v rxd = 5v,v txd = 5v, v en = 5v - 5 5 a leakage current low v leak_rxd v rxd = 0v,v txd = 5v, v en = 5v - 5 5 a pin inh on resistance inh r on_inh normal or standby mode, v inh = v s - 1v , v s = 12v 20 50 ? leakage current inh high i inh_lk en = l ,v inh = 27v, v s = 27v - 5 5 a leakage current inh low i inh_lk en = l ,v inh = 0v, v s = 27v - 5 5 a pin wake high level input voltage v ih_ wk v s - 1v v low level input voltage v il_ wk v s - 3.3v v leakage current wake high i wake_lk v wake = 27v, v s = 27v - 5 5 a pull up current wake i wake_ pu - 30 - 20 - 1 a thermal protection thermal shutdown t sd [1] 155 170 190 c thermal hysteresis t hys [1] 10 30 c [1] no production test, guaranteed by design and qualification
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 9 of 26 3901080020 nove mber 2015 rev 00 6 [2] in accordance to sae j2602 [3] guaranteed by design
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 10 of 26 3901080020 nove mber 2015 rev 00 6 3.4 dynamic character istics unless otherwise specified all values in the following table are valid for v s = 5 to 27 v and t amb = - 40 to 125 o c . parameter symbol condition min typ max unit propagation delay receiver [1] t rec_pdf c rxd =25pf falling edge 6 s propagation de lay receiver [1] t rec_pdr c rxd =25pf rising edge 6 s propagation delay receiver symmetry t rec_sym calculate t rec_pdf - t rec_pdr - 2 2 s receiver debounce time [2] t rec_deb lin rising & falling edge 0.5 4 s lin duty cycle 1 [2] [3] [4] d1 20 kbps operation , 0.396 lin duty cycle 2 [2] [3] [4] d2 20kbps operation , 0.581 lin duty cycle 3 [ 2 ] [ 3 ] d3 0.417 lin duty cycle 4 [ 2 ] [ 3 ] d4 0.590 trec(max) C tdom(min) [ 5 ] t3 15.9 s trec(min) C tdom(max) [ 5 ] t4 17.28 s remote wake - up filter time t wu_remote s leep mode, lin rising & falling edge 30 150 s local wake - up filter time t wu_local s leep mode, wake falling edge 10 50 s delay from standby to sleep mo de t dsleep v en = 0 150 500 ms txd dominant time out time t txd_to normal mode, v txd = 0 27 60 ms en C debounce time t en_deb normal < -- > standby mode transitions 0.5 4 s [1] this parameter is tested by applying a square wave signal to the lin. the m inimum slew rate for the lin rising and falling edges is 50v/us [2] see figure 5 C lin timing diagram [3] standard loads for duty cycle measurements are 1k ? /1nf , 660 ? /6.8nf, 500 ? /10nf [4] not valid for the sae j2602 version (optimized for 10.4kbd operation) of the mlx80020 xa [5] in accordance to sae j2602 , only for device version mlx80020 xb
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 11 of 26 3901080020 nove mber 2015 rev 00 6 4. functional description 4.1 operating modes mode en txd rxd inh transmitter remarks standby 0 weak pull down/active low [1] floating/active low [2] vs off entered after power on o r wake up normal mode 1 weak pull down/input for transmit data stream output for lin data stream vs on [3] [4] [5] sleep mode 0 weak pull down floating floating off no local or remote wake up [1] indicates the wake up flag in case of local wake up [2] after power on rxd is floating. if any wake up(local or remote) occurs it will be indicated by active low [3] active low interrupt at pin rxd will be removed when entering normal mode [4] wake up source flag at pin txd will be removed when entering normal mode [5] normal m ode will be entered by a low - > high transition on pin en. when recessive level (high) on pin txd is present the transmit path will be enabled
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 12 of 26 3901080020 nove mber 2015 rev 00 6 figure 3 : state diagram of the mlx80020 4.2 initialization and standby mode when the ba ttery supply voltage vs exceeds the specified threshold v s_por , the mlx80020 automatically ente rs an intermediate standby mode. t he inh output becomes high (v s ) and therefore the external voltage regulator will provide the vcc supply voltage to the ecu. th e pin rxd is floating and the integrated slave pull up resistor with decoupling diode secures high level on the pin lin. the transmitter as well as the receiver is disabled. if there occurs no mode change to normal mode via an en low to high transition wit hin the time defined (typically 350ms), the ic enters the most power saving sleep mode and the inh output will become floating (logic 0). furthermore t he standby mode will be entered after a valid local or remote wake up event, when the mlx80020 is in sle ep mode. the entering of the standby mode after wake up will be indicated by an active low interrupt on pin rxd. 4.3 normal mode by entering this mode the mlx80020 can be used as interface between the single wire lin bus and the microcontroller. the incoming bus traffic is detected by the receiver and transferred via the rxd output pin to the microcontroller. (see figure 3, lin timing diagram) sleep mode en inh low floating v s on standby en = > low en = > high remote or local wake up request en = > high [ 1 ] floating after power on active low interrupt after wake up inh low en v s low [ 1 ] rxd t > 150 ms - > no mode change - > no valid wake up lin termination 200 k o transmitter off lin termination 30 k o transmitter off rxd floating floating txd low / high [ 2 ] [ 2 ] weak pull down after power on indicates wake up source via weak / strong pull down normal mode en inh high lin termination 30 k o transmitter on rxd vs receive data
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 13 of 26 3901080020 nove mber 2015 rev 00 6 rxd the pin rxd is a buffered open drain output with a typical load of: resistance: 2.7 kohm capacitance: < 25 pf the o utput signal supports by the external pull up resistor 3.3v and 5v supply systems. txd the transmit data stream of the lin protocol controller applied to the pin txd is converted into the lin bus signal with slew rate control in order to minimize electromagnetic emis s ions . the pin txd contains a weak pull down resistor. the input thresholds are compatible to 3.3v and 5v supply systems. to enable the transmit path, the txd pin has to be driven recessive (high) after or during the normal mode has be en entered. txd dominant time - out feature by the first dominant level on pin txd after the transmit path has been enabled, the dominant time - out counter is started. in case of a faulty blocked permanent dominant level on pin txd the transmit path will be disabled after the specified time t txd_to . the time - out counter is reset by the first negative edge on pin txd . en the normal mode can be entered being in sleep or standby mode, when the pin en is driven high. to prevent unwanted mode transitions, the en input contains a debounce filter as specified ( t en_deb ). the pin en contains a weak pull down resistor. the input thresholds are compatible to 3.3v and 5v supply systems. additionally the positive edge on pin en results in an immediate reset of the active low interrupt on pin rxd as well as the wake - up source recognition flag on pin txd (see chapter 4.5 wake up) .
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 14 of 26 3901080020 nove mber 2015 rev 00 6 data transmission speed the mlx80020 is a constant slew rate transceiver that means the bus driver operates with a fixed slew rate range indepen dent of the supply voltage. this principle secures a very good symmetry of the slope times between recessive to dominant and dominant to recessive slopes within the lin bus load range (c bus , r term ). the mlx80020 kdc a version guarantees data rates up to 20 kbd within the complete bus load range under worst case conditions. the version mlx80020 kdc b is optimized for applications with a maximum baud rate of 10.4kbd (sae j2602) in order to minimize eme. these devices can not be used in applications with highe r baud rates. the constant slew rate principle is very robust against voltage drops and can operate with rc - oscillator systems with a clock tolerance up to 2% between 2 nodes. duty cycle calculation lin 2.x with the timing parameters shown in the pict ure below two duty cycles , based on t rec(min) and t rec(max) can be calculated as follows : t bit =50s d1 = t rec(min) / (2 x t bit ) d 2 = t rec(max) / (2 x t bit ) figure 4 - duty cycle measurement and calculation in acco rdance to lin physical layer specification 2.x for baud rates up to 20kbps
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 15 of 26 3901080020 nove mber 2015 rev 00 6 duty cycle calculation j2602: with the timing parameters shown in the table below two duty cycles , based on t rec(min) and t rec(max) can be calculated as follows : t bit =96s d3 = t rec(min) / (2 x t bit ) d4 = t rec(max) / ( 2 x t bit ) figure 5 - duty cycle measurement and calculation in accordance to lin physical layer specification 2.x for baud rates of 10.4kbps or below
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 16 of 26 3901080020 nove mber 2015 rev 00 6 4.4 sleep mode the mo st power saving mode of the mlx80020 is the sleep mode. the mlx80020 offers two procedures to enter the sleep mode: ? th e mode is selected when the pin en is driven low in normal mode for longer than the specified filter time ( t en_deb ). the mode change into sleep mode is possible even in case of dominan t voltage levels on the lin bus, pin s wake or txd . ? if the mlx80020 is in standby mode after power - on or wake - up, a sleep counter is started and switches the transceiver into sleep mode after the specified ti me (typ. 350ms) even when the microcontroller of the ecu will not confirm the normal operation by setting the en pin to logic high. this new feature allows faulty blocked lin nodes to reach always the most power saving mode. being in sleep mode the inh p in becomes floating and the ecu voltage regulator can be switched off in order to minimize the current consumption of the complete lin node. the transmitter is disabled and the pin rxd is disconnected from the receive path and is floating. the slave termin ation resistor (lin pull up resistor with decoupling diode between pins lin and vs) is disconnected and only a weak lin pull up resistor is applied to the lin bus (see chapter 5.4 fail - safe features) 4.5 wake up when in sleep mode the mlx80020 offers thee wake - up procedures : ? in applications with continuously powered ecu a wake up via mode transition to normal mode is possible (see chapter 4.3 normal mode) ? remote wake - up via lin bus traffic after a falling edge on the lin bus followed by a dominant voltage le vel for longer than the specified value( t wu_remote ) and a rising edge on pin lin will cause a remote wake up (see fig.4 page ) ? local wake - up via a negative edge on pin wake a negative edge on the pin wake and a dominant voltage level for longer than the s pecified time( t wu_local ) will cause a local wake - up. the current for an external switch has to be provided by an external pull up resistor r wk . for a reverse current limitation in case of a closed external switch and a negative ground shift or an ecu loss of ground a protection resistor r wk_prot between pin wake and the switch is recommended. (see fig.5 page ) the pin wake provides a weak pull up current towards the battery voltage that provides a high level on the pin in case of open circuit failures or if no local wake up is required. in such applications it is recommended to connect the pin wake directly to pin vs in order to prevent influences due to emi. 4.6 wake up source recognition the device can distinguish between a local wake - up event (pin wake) and a remote wake - up event. the wake - up source flag is set after a local wake - up event and is indicated by an active low on pin txd. the wake - up flag can be read if an external pull up resistor towards the microcontroller supply voltage has been added ( see fig .5 ) and the mlx80020 is still in stanby mode: ? low level indicates a local wake - up event ? high level indicates a remote wake up event the wake - up request is indicated by an active low on pin rxd and can be used for an interrupt.. when the microcontroller confirms a normal mode operation by setting the pin en to high, both the wake - up request on pin rxd as well as the wake - up source flag on pin txd are reset immediately.
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 17 of 26 3901080020 nove mber 2015 rev 00 6 figure 6 : remote wake - up behavior v rxd t v en t v inh t v lin t v cc _ ecu t t > t wu _ remote wake - up interrupt
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 18 of 26 3901080020 nove mber 2015 rev 00 6 5. fail - safe features 5.1 los s of battery if the ecu is disconnected from the battery, the bus pin is in high impedance state. there is no impact to the bus traffic and to the ecu itself. reverse current is limited to < 20 a 5.2 loss of ground in case of an interrupted ecu ground connect ion there is no influence to the bus line. the current from the ecu to the lin bus is limited by the weak pull up resistance of the pin lin, the slave termination resistor is disconnected in order to fulfill the sae j2602 requirements for the loss of groun d current (<100 a @12v). 5.3 short circuit to battery the transmitter output current is limited to the specified value in case of short circuit to battery in order to prevent high current densities and thermal hot spots in the lin driver. 5.4 short circuit to gr ound if the lin bus wiring is shorted to negative shifted ground levels, there is no current flow from the ecu ground to the bus and no distortion of the bus traffic occurs . the permanent failure current from battery to ground can be reduced dramatically b y using the inh pin as termination control pin for the master pull up resistor ( see figure 7 : application circuitry ) . if the controller detects a short circuit of the lin bus to ground the transceiver can be se t in to sleep mode. the inh pin is floating and therefor e the master pull up resist or is disconnected from the bus line. additionally the internal slave termination resistor is switched off and only a weak pull up termination is applied to the lin bus (typ. 75 ? a). if the failure disappears, the bus level will become recessive again and will wake up the syst em even if no local wake up occurs or is possible. 5.5 thermal overload the mlx80020 is protected against thermal overloads. if the chip temperature exceeds the specified value, the transmitter is disabled until thermal recovery and the following recessive to dominant transition on pin txd . the receiver is still working while thermal shutdown. 5.6 undervoltage lock out if the battery supply voltage is missing or decr eased under the specified value ( v s_uv ) , the transmitter is disabled to prevent undefined bus traffic. 5.7 open circuit protection ? the pin txd provides a weak pull down. the transmitter can not be enabled. ? the pin en provides a weak pull down to prevent undef ined normal mode transitions. ? if the battery supply voltage is disconnected, the pin rxd is floating ? the pin wake provides a weak pull up current towards supply voltage vs to prevent local wake - up requests
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 19 of 26 3901080020 nove mber 2015 rev 00 6 6. application hints 6.1 application circuitry figure 7 : application circuitry mlx 80020 rxd v bat voltage regulator 3 . 3 v / 5 v p inh lin 180 pf txd vs v s vbat slave ecu gnd gnd l i n b u s 100 nf wake 1 0 0 n f mlx 80020 rxd v bat voltage regulator 3 . 3 v / 5 v 1 0 u f 1 n 4001 p inh lin 180 pf txd vs master ecu gnd gnd 100 nf wake r rx 1 k o r tx r wk r wk _ prot v s 1 0 0 n f 1 0 u f 1 n 4001 r rx optinal connection in case switchable termination is required vbat
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 20 of 26 3901080020 nove mber 2015 rev 00 6 7. mechanical specification soic8 small outline integrated circiut (soic), so ic 8, 150 mil a1 b c d e e h h l a ? zd a2 all dimension in mm , coplanarity < 0.1 mm min max 0.10 0.25 0.36 0.46 0.19 0.25 4.80 4.98 3.81 3.99 1.27 5.80 6.20 0.25 0.50 0.41 1.27 1.52 1.72 0 8 0.53 1.37 1.57 all dimension in inch, coplanarity < 0.004 min max 0.004 0.0098 0.014 0.018 0.0075 0.0098 0.189 0.196 0.1 50 0.157 0.050 0.2284 0.244 0.0099 0.0198 0.016 0.050 0.060 0.068 0 8 0.021 0.054 0.062
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 21 of 26 3901080020 nove mber 2015 rev 00 6 8. tape and reel specification 8.1 tape specification standard reel with diameter of 13 package parts per reel width pitch soic8 30 00 12 mm 8 mm d 0 e p 0 p 2 t ma x t 1 max g 1 min g 2 min b 1 max d 1 min f p 1 r min t 2 max w 1.5 +0.1 1.75 ? 0.1 4.0 ? 0.1 2.0 ? 0.05 0.6 0.1 0.75 0.75 8.2 1.5 5.5 ? 0.05 4.0 ? 0.1 30 6.5 12.0 ? 0.3 a 0 , b 0 , k 0 can be calculated with package specification. cover tape width 9.2 mm. max . 10 top view sectional view max . 10 ic pocket r m i n . w f e cover tape p 0 p 2 d 0 p 1 d 1 < a 0 > b 0 g 2 g 1 t 2 t t 1 b 1 k 0 s 1 abwickelrichtung s 0 zus?tzlich bei 36 mm / 44 mm gurt
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 22 of 26 3901080020 nove mber 2015 rev 00 6 8.2 reel specific ation a max b* c d* min 330 2.0 ? width of half reel n min w 1 w 2 max 4 mm 100,0 4,4 7,1 8 mm 100,0 8,4 11,1 a d* b* c w 2 w 1 n
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 23 of 26 3901080020 nove mber 2015 rev 00 6 9. esd/emc remarks 9.1 general remarks electronic semiconductor products are sensitive to elec tro static discharge (esd). always observe electro static discharge control procedures whenever handling semiconductor products. 9.2 esd - test the mlx80020 is tested according to hbm aec - q100 - 002 . the esd test cdm according to aec - q100 - 011 as well as system l evel esd test according to iec 61000 - 4 - 2 are performed by an external test house. 9.3 emc the test on emc impacts is done according to iso 7637 - 2 for power supply pins and iso 7637 - 3 for data - and signal pins as well as the hardware requirements for lin, ca n and flexray interfaces in automotive applications ; audi, bmw, daimler, porsche, vw; 2009 - 12 - 02
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 24 of 26 3901080020 nove mber 2015 rev 00 6 10. standard information regarding manufacturability of melexis products with different soldering processes our products are classified and qualified rega rding soldering technology, solderability and moisture sensitivity level according to following test methods: reflow soldering smds ( s urface m ount d evices) ? ipc/jedec j - std - 020 moisture/reflow sensitivity classification for nonhermetic solid state surfac e mount devices (classification reflow profiles according to table 5 - 2) ? eia/jedec jesd22 - a113 preconditioning of nonhermetic surface mount devices prior to reliability testing (reflow profiles according to table 2) wave soldering smds ( s urface m ount d ev ices) and thds ( t hrough h ole d evices) ? en60749 - 20 resistance of plastic - encapsulated smds to combined effect of moisture and soldering heat ? eia/jedec jesd22 - b106 and en60749 - 15 resistance to soldering temperature for through - hole mounted devices iron s oldering thds ( t hrough h ole d evices) ? en60749 - 15 resistance to soldering temperature for through - hole mounted devices solderability smds ( s urface m ount d evices) and thds ( t hrough h ole d evices) ? eia/jedec jesd22 - b102 and en60749 - 21 solderability for a ll soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with melexis. the applicatio n of wave soldering for smds is allowed only after consulting melexis regarding assurance of adhesive strength between device and board. melexis is contributing to global environmental conservation by promoting lead free solutions. for more information o n qualifications of rohs compliant products (rohs = european directive on the restriction of the use of certain hazardous substances) please visit the quality page on our website: http://www.melexis.com/qu ality.aspx
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 25 of 26 3901080020 nove mber 2015 rev 00 6 11. revision history version changes remark date 00 1 initial release october 20 10 002 changed maximum ratings (esd value cdm increased) changed static characteristic in acc to cpk - values changed chapter 9.3 emc changes tape specification cha pter 8.1 november 2010 003 change of order code november 2010 004 change short term to high operating range in chapter operating conditions june 2011 005 logo, disclaimer, ordering code june 2012 006 electrical specification of lin - transmitter updated november 2015
mlx80020 enhanced lin transceiver mlx80020 C datasheet page 26 of 26 3901080020 nove mber 2015 rev 00 6 12. disclaimer devices sold by melexis are c overed by the warranty and patent indemnification provisions appearing in its term of sale. melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devic es from patent infringement. melexis reserves the right to change specifications and prices at any time and without notice. therefore, prior to designing this product into a system, it is necessary to check with melexis for current information. this produc t is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life - support or life - sustaining equipment are specif ically not recommended without additional processing by melexis for each application. the information furnished by melexis is believed to be correct and accurate. however, melexis shall not be liable to recipient or any third party for any damages, includi ng but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of th e technical data herein. no obligation or liability to recipient or any third party shall arise or flow out of melexis rendering of technical or other services. ? 2012 melexis nv. all rights reserved. for the latest version of this document, go to our website at www.melexis.com or for additional information contact melexis direct: europe, africa, asia : america: phone: +32 1367 0495 phone: +1 248 306 5400 e - mail: sales_europe@melex is.com e - mail: sales_usa@melexis.com iso/ts 16949 and iso14001 certified

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