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Fault Tolerant Differential CAN-Transceiver
TLE 6254-2G
Final Data Sheet
1
Features
* Data transmission rate up to 125 kBaud * Very low current consumption in stand-by and sleep operation mode * Implemented receive-only mode * Optimized EMC behavior * Wake-up input pin, dual edge sensitive P-DSO-14-13 * Battery fail flag * Extended bus failure management to guarantee safe operation during all bus line failure events * Full support of dual failure conditions * Fully wake-up capability during all bus line failures conditions * Supports one-wire transmission mode with ground offset voltages up to 1.5 V * Prevention from bus occupation in case of CAN controller failure * Thermal protection * Bus line error protection against transients in automotive environment Type TLE 6254-2G Ordering Code Q67006-A9549 Package P-DSO-14-13 (SMD)
2
Description
The CAN-Transceiver TLE 6254-2G works as the interface between the CAN protocol controller and the physical CAN bus-lines. It is optimized for low-speed data transmission (up to 125 kBaud) in automotive and industrial applications. While no data is transferred, the power consumption can be minimized by multiple low power modes. In normal operation mode a differential signal is transmitted/received. When bus wiring failures are detected the device automatically switches in a dedicated single-wire mode to maintain communication.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Pin Configuration (top view)
3
Pin Configuration (top view)
P-DSO-14-13
INH TxD RxD NERR NSTB ENT WK
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VS GND CANL CANH VCC RTL RTH
Figure 1 Table 1 Pin No. 1 2 3 4 5 6 Pin Definitions and Functions Symbol INH TxD RxD NERR NSTB ENT Function Inhibit output; for controlling an external voltage regulator Transmit data input; integrated pull up, LOW: bus becomes dominant, HIGH: bus becomes recessive Receive data output; integrated pull up, LOW: bus is dominant, HIGH: bus is recessive Error flag output; integrated pull up, LOW: bus error (in normal operation mode), further functions see Table 2 Not stand-by input; digital control inputs to select operation modes, see Figure 4 Enable transfer input; digital control input to select operation modes, see Figure 4
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Pin Configuration (top view) Table 1 Pin No. 7 Pin Definitions and Functions (cont'd) Symbol WK Function Wake-Up input; if level of VWAKE changes the device indicates a wake-up from low power mode by switching the RxD and INT outputs LOW and switching the INH output HIGH (in sleep mode), see Table 2 Termination resistor output; connect to CANH bus-line via termination resistor (500 < RRTH < 16 k), controlled by internal failure management Termination resistor output; connect to CANL bus-line via termination resistor (500 < RRTL < 16 k), controlled by internal failure and mode management Supply voltage input; + 5 V, block to GND directly at the IC with ceramic capacitor CAN bus line H; HIGH: dominant state CAN bus line L; LOW: dominant state Ground Battery voltage supply input; block to GND directly at the IC with ceramic capacitor
8
RTH
9
RTL
10 11 12 13 14
VCC
CANH CANL GND
VS
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Final Data TLE 6254-2G
Functional Block Diagram
4
Functional Block Diagram
Vcc
10
Vs
14
1 7 6 5
INH WK ENT NSTB
RTL
9
Mode Control (normal, stand-by, sleep) Driver Output Stage Temp.Protection Time Out
CANH 11 CANL 12
2
TxD
RTH
8
Vcc
VCC
7.2
1.8
Failure Management
Bus Failure Wake-Up Vbat Fail Flag Multiplexer
VCC
Vcc
4
NERR
Filter
-2.8
3.2
3
RxD
GND 13
7.2
Receiver
Figure 2
Block Diagram
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Circuit Description
5
Circuit Description
The CAN transceiver TLE 6254-2G works as the interface between the CAN protocol controller and the physical CAN bus-lines. Figure 3 shows the principle configuration of a CAN network. The TLE 6254-2G is optimized for low-speed data transmission (up to 125 kBaud) in automotive and industrial applications. In normal operation mode a differential signal is transmitted/received. When bus wiring failures are detected the device automatically switches in a dedicated single-wire mode to maintain communication. While no data is transferred, the power consumption can be minimized by multiple low power operation modes. Further a receive-only mode is implemented. To reduce radiated electromagnetic emission (EME) the dynamic slopes of the CANL and CANH signals are both limited and symmetric. This allows the use of an unshielded twisted or parallel pair of wires for the bus. During single-wire transmission (one of the bus lines is affected by a bus line failure) the EME performance of the system is degraded from the differential mode. In case the transmission data input TxD is permanently dominant, both, the CANH and CANL transmitting stage are disabled after a certain delay time. This is necessary to prevent the bus from being blocked by a defective protocol unit or short to GND at the TxD input.
Local Area 1 Local Area 2
Controller 1
Controller 2
RxD 1
TxD 1
RxD 2
TxD 2
Transceiver 1
Transceiver 2
Bus Line
AES02410
Figure 3
CAN Network Example
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Circuit Description
Power Down
Start Up Power Up
Normal Mode NSTB 1 ENT 1 INH high
NSTB ENT 1 1
ENT
0
ENT
1
NSTB ENT or VCC
0 0 low
RxD-Only NSTB 1 ENT 0 INH high
NSTB VCC NSTB
0 or low 1
Vbat Stand-By NSTB 0 ENT 0 INH high
NSTB
0 Wake-Up via CAN-bus or WK-Input; t > tWU(min) or t > tWK(min)
NSTB ENT
0 1 ENT 1 ENT t < th(min) 0
Go to Sleep Mode NSTB ENT INH 0 1 float.
ENT = 1 t > th(min)
Sleep Mode NSTB 0 ENT 0 INH float.
Figure 4
State Diagram
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Circuit Description
5.1
Operation Modes, Wake-Up
In addition to the normal operation mode, the TLE 6254-2G offers a receive-only mode as well as two low power operation modes to save power during periods that do not require communication on the CAN bus: sleep mode, VBat stand-by mode (see Table 2 and Figure 4). Via the control input pins NSTB and ENT the operation modes are selected by the microcontroller. In the low power modes neither receiving nor transmitting of messages is possible. In sleep operation mode the lowest power consumption is achieved. In order to minimize the overall current consumption of the ECU (electronic control unit) the external voltage regulator (5 V supply) is deactivated by the INH output in this mode, when connected. For that purpose the INH output is switched to high impedance. In parallel the CANL line is pulled-up to the battery supply voltage via the RTL output and the pull-up paths at the input pins TxD and RxD are disabled from the internal supply. To enter the sleep operation mode the transition mode "Go-to-Sleep" has to be selected (Figure 4) for a minimum time th(min). After the minimum hold time th(min) the sleep mode can be actively selected. Otherwise the TLE 6254-2G will automatically fall in sleep mode because of the not powered microcontroller. On a wake-up request either by bus line activities or via the WAKE input, the transceiver is automatically set in VBat-stand-by mode. Now the voltage regulator (5 V supply) is enabled by the INH output. The WAKE input reacts to both, transition from high to low voltage level as well as the other way round. To avoid faulty wake-ups due to transients on the bus lines or the WAKE input circuitry respectively, a certain filter time is implemented. As soon as VCC is provided, the wake-up request is monitored on both, the NERR and RxD outputs, by setting them low. Upon this the microcontroller can activate the normal operation mode by setting the control inputs NSTB and ENT high. The VBat stand-by mode corresponds to the sleep mode, but a voltage regulator connected to the INH output will remain active. Wake-up requests via the WAKE pin or the bus lines are immediately reported to the microcontroller by setting RxD and NERR low. A power-on condition (VBAT pin is supplied) automatically switches the TLE 6254-2G to VBat stand-by mode. In the receive-only mode data on the CAN-bus are transvered to the RxD output, but both output stages, CANH as well as CANL are disabled. This means that data at the TxD input are not transmitted to the CAN bus. This mode is useful in combination to a dedicated network-management software that allows separate diagnosis for all nodes. A wake-up request in the receive-only mode is only reported at the RxD-output. The NERR output in this mode is used to indicate a battery fail condition. When entering the normal mode the Vbat-flag is reset and the NERR output becomes high again. This feature is useful e.g. when changing the ECU and therefore a presetting routine of the microcontroller has to be started.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Circuit Description If either of the supply voltages drops below the specified limits, the transceiver is automatically switched to VBat stand-by mode or power down mode respectively.
.
Table 2 0 0 0 1 0 0 1 0
Truth Table of the CAN Transceiver INH NERR RxD RTL switched to VBAT switched to VBAT switched to VBAT active LOW HIGH = recessive switched to VCC VBAT power-on receive data; 3) LOW = dominant flag receive data active LOW bus error flag HIGH = recessive switched receive data; to VCC LOW = dominant receive data
NSTB ENT Mode
VBAT stand-by
mode
1)
Vbat
floating becomes floating
active LOW wake-up interrupt if VCC is present
sleep mode2) go to sleep command Receive-only mode
Vbat
1
1
normal mode
Vbat
1) 2) 3)
Wake-up interrupts are released when entering normal operation mode. If go to sleep command was used before, ENT may turn LOW as VCC drops, without affecting internal functions.
VBAT power-on flag will be reseted when entering normal operation mode.
5.2
Bus Failure Management
The TLE 6254-2G detects the bus failures as described in Table 3, and automatically switches to a dedicated CANH or CANL single wire mode to maintain data transmission if necessary. Therefore, the device is equipped with one differential receiver and 4 single ended receivers, two for each bus line. To avoid false triggering by external RF influences the single wire modes are only activated after a certain delay time. As soon as the bus failure disappears the transceiver switches back to differential mode after another time delay. Bus failures are indicated in the normal operation mode by setting the NERR output low. The differential receiver threshold is typ. - 2.8 V. This ensures correct reception in the normal operation mode as well as in the failure cases 1, 2 and 4 with a noise margin as high as possible. For these failures, further failure management is not necessary. Detection of the failure cases 1, 2, 3a and 4 is only possible when the bus is dominant. Nevertheless, they are reported on the NERR output until transmission of the next CAN word on the bus begins.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Circuit Description When one of the bus failures 3, 5, 6, 6a and 7 is detected, the defective bus wire is disabled by switching off the affected bus termination and the respective output stage. A wake-up from sleep mode via the bus is possible either via a dominant CANH or CANL line. This ensures that a wake-up is possible even if one of the failures 1 to 7 occurs. Table 3 failure # 1 2 3 3a 4 5 6 6a 7 CAN bus-line failures (according to ISO 11519-2) failure description CANL line interrupted CANH line interrupted CANL line shorted to VBAT CANL line shorted to VCC CANH line shorted to GND: CANL line shorted to GND: CANH line shorted to VBAT CANH line shorted to VCC CANL line shorted to CANH line
A current limiting circuit protects the CAN transceiver output stages from damage by short-circuit to positive and negative battery voltages. The CANH and CANL pins are protected against electrical transients which may occur in the severe conditions of automotive environments. The transmitter output stages generate the majority of the power dissipation. Therefore they are disabled if the junction temperature exceeds the maximum value. This effectively reduces power dissipation, and hence will lead to a lower chip temperature, while other parts of the IC can remain operating. In temperature shut-down condition the TLE 6254-2G is still able to receive CAN-bus messages.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Circuit Description
5.3
Table 4
Application Hints
Not Needed Pins Recommendation Leave open Leave open Connect to VCC Connect to VCC Connect to VBAT, if not possible connect to GND: increases current consumption by approx. 5 A
Pin Symbol INH NERR NSTB ENT WAKE
The transceiver will stay in a present operating mode until a suitable condition disposes a state change. If not otherwise defined all conditions are AND-combined. The signals VCC and VBAT show if the supply is available (e.g. VCC = 1: VCC voltage is present). If at minimum one supply voltage is switched on, the start-up procedure begins (not figured). After a delay time the device changes to normal operating or stand-by mode.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Absolute Maximum Ratings
6
Parameter
Absolute Maximum Ratings
Symbol Limit Values min. max. 40 6 V V V V V V mA V V C C kV kV - - - -
1)
Unit Notes
Input voltage at VBAT Logic supply voltage VCC Input voltage at TxD, RxD, NERR, NSTB and ENT Input voltage at CANH and CANL Transient voltage at CANH and CANL Input voltage at WAKE Output current at WAKE Input voltage at INH Input voltage at RTH and RTL Junction temperature Storage temperature Electrostatic discharge voltage at pin CANH, CANL, RTH, RTL,VBAT Electrostatic discharge voltage at any other pin
1) 2)
VS VCC VIN VBUS VBUS VWK IWK VINH VRTH/L Tj Tstg Vesd Vesd
- 0.3 - 0.3 - 0.3 - 40 - 150 - - - 0.3 - 0.3 - 40 - 55 -4 -2
VCC + 0.3
40 100 40 5
- - - - - -
2)
VBAT + 0.3
40 160 155 4 2
See ISO 7637 Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 k resistor.
Note: Stresses above those listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Operating Range
7
Parameter
Operating Range
Symbol Limit Values min. max. 5.25 27 16 150 V V k C - - - - 4.75 6 0.5 - 40 Unit Notes
Logic input voltage Battery input voltage Termination resistances at RTL and RTH Junction temperature Thermal Resistance Junction ambient Thermal Shutdown Junction temperature
VCC VS RRTL/H Tj
Rthja
-
120
K/W
-
TjSH
160
200
C
10C hyst.
Wake Input Voltage Wake input voltage
VWK
- 0.3
27
V
-
Note: In the operating range, the functions given in the circuit description are fulfilled.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Static Characteristics
8
Static Characteristics
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Symbol Limit Values min. Supplies VCC, VS Supply current typ. max. Unit Notes
ICC
- -
5.0 6.5 3.5 25 40 35 2.5
8.0 10 5.0 50 60 60 3.5
mA mA mA A A A V
recessive; TxD = VCC dominant; TxD = 0 V; no load
Supply current (Receive-only mode) Supply current (VBAT stand-by) Supply current (sleep operation mode) Battery voltage for setting power-on flag Battery voltage low time for setting power-on flag
ICC ICC IS IS VS
- - - - 1.5
VCC = 5 V; VS = 12 V VCC = 0 V; VS = 12 V; VCC stand-by mode
guaranteed by design
tpw(on)
10
s
Receive-only mode
Receiver Output RxD and Error Detection Output NERR HIGH level output voltage (pin NERR) HIGH level output voltage (pin RxD)
VOH VOH
VCC
- 0.9
- - -
VCC VCC
0.9
V V V
I0 = - 100 A I0 = - 250 A I0 = 1.25 mA
VCC
- 0.9 0
LOW level output voltage VOL
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Static Characteristics
8
Static Characteristics (cont'd)
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Symbol Limit Values min. typ. max. Unit Notes
Transmission Input TxD, Not Stand-By NSTB and Enable Transfer ENT HIGH level input voltage VIH LOW level input voltage HIGH level input current (pins NSTB and ENT) LOW level input current (pins NSTB and ENT) HIGH level input current (pin TxD) LOW level input current (pin TxD) 0.7 x - - 30 6 - 40 - 200 -
VCC
+ 0.3 0.3 x
V V A A A A V
- -
VCC VIL IIH IIL IIH IIL
- 0.3 - 0.7 - 150 - 600 2.75
VCC
60 - - 10 - 40 4.5
Vi = 4 V Vi = 1 V Vi = 4 V Vi = 1 V
-
Forced battery voltage VCC stand-by mode (fail safe) Wake-up Input WAKE Input current Wake-up threshold voltage Inhibit Output INH HIGH level voltage drop VH = VS - VINH Leakage current VH
IIL VWK(min)
-3 2.2
-2 3.2
-1 3.9
A V
-
VNSTB = 0 V
- - 5.0
0.3 -
0.8 5.0
V A
IINH = - 0.18 mA;
sleep operation mode; VINH = 0 V
IINH,lk
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Static Characteristics
8
Static Characteristics (cont'd)
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Symbol Limit Values min. Bus Lines CANL, CANH Differential receiver recessive-to-dominant threshold voltage Differential receiver dominant-to-recessive threshold voltage CANH recessive output voltage CANL recessive output voltage CANH dominant output voltage CANL dominant output voltage CANH output current typ. max. Unit Notes
VdRxD(rd) - 2.8
- 2.5
- 2.2
V
VCC = 5.0 V
VdRxD(dr) - 3.2
- 2.9
- 2.6
V
VCC = 5.0 V
VCANH,r VCANL,r VCANH,d VCANL,d ICANH
0.10
0.15 -
0.30 -
V V V V mA A
TxD = VCC; RRTH < 4 k TxD = VCC; RRTL < 4 k TxD = 0 V; ICANH = - 40 mA TxD = 0 V; ICANL = 40 mA
VCC
- 0.2
VCC
- 1.4 - - 110 -5
VCC
- 1.0 1.0 - 80 0
VCC
1.4 - 50 5
VCANH = 0 V;
TxD = 0 V sleep operation mode; VCANH = 12 V
CANL output current
ICANL
50 -5
80 0
110 5
mA A
VCANL = 5 V;
TxD = 0 V sleep operation mode; VCANL = 0 V; VS = 12 V
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Static Characteristics
8
Static Characteristics (cont'd)
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Symbol 6.5 Limit Values min. Voltage detection Vdet(th) threshold for short-circuit to battery voltage on CANH and CANL typ. 7.3 max. 8.0 V - Unit Notes
Vdet(th) Voltage detection threshold for short-circuit to battery voltage on CANH
CANH wake-up voltage threshold CANL wake-up voltage threshold Wake-up voltage threshold hysteresis CANH single-ended receiver threshold CANL single-ended receiver threshold CANL leakage current
VBAT
- 2.5
VBAT
-2
VBAT
-1
V
stand-by/ sleep operation mode - - Vwu = VCANL,wu -
VCANH,wu 1.2 VCANL,wu 2.2
Vwu 0.2 1.6 2.4 -5
1.9 3.1 - 2.1 2.9 0
2.7 3.9 - 2.6 3.4 5
V V V V V A
VCANH,wu VCANH VCANL ICANL,lk
failure cases 3, 5 and 7 failure case 6 and 6a
CANH leakage current
ICANH,lk
-5
0
5
A
VCC = 0 V; VS = 0 V; VCANL = 12 V; Tj < 85 C VCC = 0 V; VS = 0 V; VCANH = 5 V; Tj < 85 C
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Static Characteristics
8
Static Characteristics (cont'd)
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Symbol Limit Values min. Termination Outputs RTL, RTH RTL to VCC switch-on resistance RTL output voltage typ. max. Unit Notes
RRTL VoRTL
-
20
95 - 28
V k
Io = - 10 mA
|Io| < 1 mA; VCC stand-by mode
VCC
- 1.0 5
VCC
- 0.7 15
RTL to BAT switch series RoRTL resistance RTH to ground switch-on RRTH resistance RTH output voltage RTH pull-down current RTL pull-up current RTH leakage current
VBAT stand-by or
sleep operation mode
- - 40 - 120 -5
20 0.7 75 - 75 0
95 1.0 120 - 40 5
V A A A
Io = 10 mA Io = 1 mA;
low power mode failure cases 6 and 6a failure cases 3, 3a, 5 and 7
VoRTH IRTH,pd IRTL,pu IRTH,lk
RTL leakage current
IRTL,lk
-5
0
5
A
VCC = 0 V; VS = 0 V; VRTH = 5 V; Tj < 85 C VCC = 0 V; VS = 0 V; VRTL = 12 V; Tj < 85 C
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Dynamic Characteristics
9
Dynamic Characteristics
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter CANH and CANL bus output transition time recessive-to-dominant CANH and CANL bus output transition time dominant-to-recessive Minimum dominant time for wake-up via CANL or CANH Symbol Limit Values min. typ. 1.2 max. 2.1 s 10% to 90%; C1 = 10 nF; C2 = 0; R1 = 100 10% to 90%; C1 = 1 nF; C2 = 0; R1 = 100 stand-by modes; VS = 12 V Low power modes; 0.6 Unit Notes
trd
tdr
0.3
0.6
1.3
s
twu(min)
15
25
38
s
Minimum wake-up time on tWK(min) pin WAKE Failure cases 3, 6 detection time Failure case 6a detection time Failure cases 5, 6, 6a, 7 recovery time Failure cases 3 recovery time Failure cases 5, 7 detection time Failure cases 5 detection time Failure cases 6, 6a, 7 detection time Failure cases 5, 6, 6a, 7 recovery time
15 30 2 30 250 1.0 0.4 0.8 0.4
25 45 4.8 45 500 2.0 1.0 4.0 1.0
50 80 6 80 750 4.0 2.4 8.0 2.4
s s ms s s ms ms ms ms
VS = 12 V
- - - - - stand-by modes; VS = 12 V stand-by modes; VS = 12 V stand-by modes; VS = 12 V
tfail
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Dynamic Characteristics
9
Dynamic Characteristics (cont'd)
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Propagation delay TxD-to-RxD LOW (recessive to dominant) Symbol Limit Values min. typ. 1.5 max. 2.1 s - Unit Notes
tPD(L)
C1 = 100 pF; C2 = 0; R1 = 100 ;
no failures and bus failure cases 1, 2, 3a, 4
-
1.7
2.4
s
C1 = C2 = 3.3 nF; R1 = 100 ; no bus
failure and failure cases 1, 2, 3a, 4
-
1.8
2.5
s
C1 100 pF; C2 = 0; R1 = 100 ; bus
failure cases 3, 5, 6, 6a, 7
-
2.0
2.6
s
C1 = C2 = 3.3 nF; R1 =100 ; bus
failure cases 3, 5, 6, 6a, 7
Propagation delay TxD-to-RxD HIGH (dominant to recessive)
tPD(H)
-
1.5
2.0
s
C1 = 100 pF; C2 = 0; R1 =100 ;
no failures and bus failure cases 1, 2, 3a, 4
-
2.5
3.5
s
C1 = C2 = 3.3 nF; R1 = 100 ; no bus
failure and failure cases 1, 2, 3a, 4
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Dynamic Characteristics
9
Dynamic Characteristics (cont'd)
4.75 V VCC 5.25 V; 6 V VS 27 V; normal operation mode; - 40 Tj + 125 C (unless otherwise specified). All voltages are defined with respect to ground. Positive current flowing into the IC. Parameter Propagation delay TxD-to-RxD HIGH (dominant to recessive) Symbol Limit Values min. typ. 1.0 max. 2.1 s - Unit Notes
tPD(H)
C1 100 pF; C2 = 0; R1 = 100 ; bus
failure cases 3, 5, 6, 6a, 7
-
1.5
2.6
s
C1 = C2 = 3.3 nF; R1 = 100 ; bus
failure cases 3, 5, 6, 6a, 7
Minimum hold time to go sleep command
th(min)
15 -
25 4
50 -
s -
- -
ne Edge-count difference (falling edge) between CANH and CANL for failure cases 1, 2, 3a, 4 detection NERR becomes LOW Edge-count difference (rising edge) between CANH and CANL for failure cases 1, 2, 3a, 4 recovery TxD permanent dominant disable time
-
2
-
-
-
tTxD
1.3
2.0
3.5
ms
-
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Test and Application
10
Test and Application
+5V 7 6 5 4 3 2 TxD 1 INH 20 pF
WAKE ENT NSTB NERR RxD
TLE 6254-2G
RTH RTL 8 9 CAN Transceiver V CC CANH CANL GND V BAT 10 11 12 13 14 + 12 V
R1 R1
C1
C2
C1 R 1 = 100 C 1,2 = 10 nF R1 C K = 1 nF
CAN Bus Substitute 1
R1
CK
Schaffner Generator
CK
CAN Bus Substitute 2
AES02423
Figure 5
Test Circuits
For isolated testing the CAN Bus Substitute 1 is connected to the CAN Transceiver (see Figure 5). The capacitors C1-2 simulate the cable. Allowed minimum values of the termination resistors RRTH and RRTL are 500 . Electromagnetic interference on the bus lines is simulated by switching to CAN Bus Substitute 2. The waves of the applied transients will be in accordance with ISO 7637 part 1, test 1, test pulses 1, 2, 3a and 3b.
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Test and Application
Vbat CAN bus
choke *)
11 12
TLE 6254-2G
CANH CANL RTH RTL VS NERR
7 4
RxD 3 TxD ENT NSTB
2
RRTH
8 9 6 5
P with On-Chip CANmodule
RRTL
14
100 nF WK
e.g. C50C, C164C
10 k
1
VCC INH GND
10
GND
100 nF
INH
VCC e.g. TLE 4263 TLE 4299 TLE 4271 TLE 4276
VS 22 F 100 nF
GND 22 F
*) optional, according to car manufacturers requirements
Figure 6
Application Circuit
Data Sheet Version 1.4
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Final Data TLE 6254-2G
Package Outlines
11
Package Outlines
P-DSO-14-13 (Plastic Dual Small Outline Package)
Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book "Package Information" SMD = Surface Mounted Device Data Sheet Version 1.4 23
Dimensions in mm 2003-07-22
GPS09330
Final Data TLE 6254-2G
Edition 2003-07-22 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 Munchen, Germany
(c) Infineon Technologies AG 2003.
All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems 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 safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/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.
Data Sheet Version 1.4
24
2003-07-22

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