SFFSAX5 December   2025 TCAN1476-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 VSON (14, DMT) Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 TCAN1476-Q1 (VSON (14, DMT) Package)
    2. 4.2 TCAN1476V-Q1 (VSON (14, DMT) Package)
  7. 5Revision History

4.2 TCAN1476V-Q1 (VSON (14, DMT) Package)

Figure 4-2 shows the TCAN1476V-Q1 pin diagram for the VSON (14, DMT) package. For a detailed description of the device pins, see the Pin Configuration and Functions section in the TCAN1476V-Q1 datasheet.

Figure 4-2 Pin Diagram (VSON (14, DMT) Package)
Table 4-7 Pin FMA for Device Pins Short-Circuited to Ground
Pin NamePin No.Description of Potential Failure EffectsFailure Effect Class
TXD11The CAN1 driver enters dominant timeout, disabling the driver. Data cannot be transmitted on the CAN1 bus.B
GND12None.D
VCC3The device becomes unpowered and a high system-level supply current potentially occurs.B
RXD14By default, the RXD pin is high-side FET ON. With a pin short-circuit to ground, a direct path forms between supply and ground, causing high current flow.A
TXD25The CAN2 driver enters dominant timeout, disabling the driver. Data cannot be transmitted on the CAN2 bus.B
GND26None.D
RXD27By default, the RXD pin is high-side FET ON. With a pin short-circuit to ground, a direct path forms between supply and ground, causing high current flow.A
STB2 8 The STB2 pin is stuck low, so the CAN2 transceiver is unable to enter low-power mode. B
CANL29The VCANL(R) specification is violated. The EMC performance of the transceiver potentially degrades.C
CANH2 10 The device cannot drive a dominant signal to the CAN2 bus, so communication on the CAN2 bus is not possible. B
VIO 11 The device enters protected mode. The transceiver is passive on both the CAN1 and CAN2 buses. B
CANL1 12 The VCANL(R) specification is violated. The EMC performance of the transceiver potentially degrades. C
CANH1 13 The device cannot drive a dominant signal to the CAN1 bus, so communication on the CAN1 bus is not possible. B
STB1 14 The STB1 pin is stuck low, so the CAN1 transceiver is unable to enter low-power mode. B
Thermal Pad - None. D
Table 4-8 Pin FMA for Device Pins Open-Circuited
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
TXD1 1 The TXD1 pin defaults high; the CAN1 driver is always recessive and unable to transmit data. B
GND1 2 The CAN1 transceiver is not powered. B
VCC 3 The device is not powered. B
RXD1 4 There is no RXD1 pin connection to the MCU. The MCU is unable to read data from the CAN1 bus using the RXD1 pin. B
TXD2 5 The TXD2 pin defaults high; the CAN2 driver is always recessive and unable to transmit data. B
GND2 6 The CAN2 transceiver is not powered. B
RXD2 7 There is no RXD2 pin connection to the MCU. The MCU is unable to read data from the CAN2 bus using the RXD2 pin. B
STB2 8 The STB2 pin defaults high; the CAN2 transceiver is stuck in low-power mode. B
CANL2 9 The device cannot drive a dominant signal on the CAN2 bus, so communication on the CAN2 bus is not possible. B
CANH2 10 The device cannot drive a dominant signal on the CAN2 bus, so communication on the CAN2 bus is not possible. B
VIO 11 The device enters protected mode. The transceiver is passive on both the CAN1 and CAN2 buses. B
CANL1 12 The device cannot drive a dominant signal on the CAN1 bus, so communication on the CAN1 bus is not possible. B
CANH1 13 The device cannot drive a dominant signal on the CAN1 bus, so communication on the CAN1 bus is not possible. B
STB1 14 The STB1 pin defaults high; the CAN1 transceiver is stuck in low-power mode. B
Thermal Pad - None. D
Table 4-9 Pin FMA for Device Pins Short-Circuited to Adjacent Pin
Pin Name Pin No. Shorted to Description of Potential Failure Effects Failure Effect Class
TXD1 1 GND1 The CAN1 driver enters dominant timeout, disabling the driver. Data cannot be transmitted on the CAN1 bus. B
GND1 2 VCC The CAN1 transceiver becomes unpowered, and high ICC current flow is possible. B
VCC 3 RXD1 The output of the RXD1 pin becomes stuck high. The MCU is unable to receive data from the CAN1 bus using the RXD1 pin. B
RXD1 4 GND2 By default, the RXD pin is high-side FET ON. With a pin short-circuit to ground, a direct path forms between supply and ground, causing high current flow. A
GND2 5 TXD2 The CAN2 driver enters dominant timeout, disabling the driver. Data cannot be transmitted on the CAN2 bus. B
TXD2 6 RXD2 The output on the RXD2 pin reflects the input to RXD2, and while this is the same transceiver, due to loop delay, the communication is potentially corrupted. Information from the CAN2 bus is potentially not received correctly. B
STB2 8 CANL2 The CAN2 transceiver potentially turns off when the CAN2 bus is recessive. The device potentially does not enter or stay in the desired mode for the CAN2 bus. B
CANL2 9 CANH2 The CAN2 bus becomes stuck recessive and no communication is possible. IOS current is potentially reached when the CAN2 driver is transmitting. B
CANH2 10 VIO The VCANH(R) specification is potentially violated depending on the VIO level. The EMC performance of the CAN2 transceiver potentially degrades. B
VIO 11 CANL1 The VCANH(R) specification is potentially violated depending on the VIO level. The EMC performance of the CAN2 transceiver potentially degrades. B
CANL1 12 CANH1 The CAN1 bus becomes stuck recessive and no communication is possible. IOScurrent is potentially reached when the CAN1 driver is transmitting. B
CANH1 13 STB1 The CAN1 transceiver potentially turns off when a dominant signal is driven on the CAN1 bus. The device potentially does not enter or stay in the desired mode for the CAN1 bus. B
Table 4-10 Pin FMA for Device Pins Short-Circuited to VCC
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
TXD1 1 The TXD1 pin becomes stuck high. The device is unable to transmit data on the CAN1 bus. B
GND1 2 The CAN1 transceiver becomes unpowered, and high ICC is possible. B
VCC 3 None D
RXD1 4 The RXD1 pin becomes stuck high. The MCU is unable to read data from the CAN1 bus using the RXD1 pin. B
TXD2 5 The TXD2 pin becomes stuck high. The device is unable to transmit data on the CAN2 bus. B
GND2 6 The CAN2 transceiver becomes underpowered, and high ICC is possible. B
RXD2 7 The RXD2 pin becomes stuck high. The MCU is unable to read data from the CAN2 bus using the RXD2 pin. B
STB2 8 The STB2 pin is stuck high. The CAN2 transceiver becomes stuck in low-power mode. B
CANL2 9 The device cannot drive a dominant signal to the CAN2 bus, so no communication is possible. The CAN2 bus potentially becomes stuck recessive during the fault. B
CANH2 10 The VCANL(R) specification is violated. The EMC performance of the transceiver potentially degrades. C
VIO 11 The I/O pins operate as 5V inputs and outputs. The microcontroller is potentially damaged if VCC > VIO. C
CANL1 12 The device cannot drive a dominant signal to the CAN1 bus, so no communication is possible. The CAN1 bus potentially becomes stuck recessive during the fault. B
CANH1 13 The VCANL(R) specification is violated. The EMC performance of the transceiver potentially degrades. C
STB1 14 The STB1 pin is stuck high. The CAN1 transceiver becomes stuck in low-power mode. B
Table 4-11 Pin FMA for Device Pins Short-Circuited to VIO
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
TXD1 1 The TXD1 pin becomes stuck high. The device is unable to transmit data on the CAN1 bus. B
GND1 2 The CAN1 bus becomes unpowered, and high ICC is possible. B
VCC 3 The I/O pins operate as 5V inputs and outputs. The microcontroller is potentially damaged if VCC > VIO. C
RXD1 4 The RXD1 pin becomes stuck high. The MCU is unable to read data from the CAN1 bus using the RXD1 pin. B
TXD2 5 The TXD2 pin becomes stuck high. The device is unable to transmit data on the CAN2 bus. B
GND2 6 The CAN2 bus becomes unpowered, and high IIO is possible. B
RXD2 7 The RXD2 pin becomes stuck high. The MCU is unable to read data from the CAN2 bus using the RXD2 pin. B
STB2 8 The STB2 pin is stuck high. The CAN2 channel becomes stuck in low-power mode. B
CANL2 9 The device cannot generate a full dominant signal on the CAN2 bus. No communication is possible. IOS current is potentially reached if VIO ≥ 3.3V. B
CANH2 10 The VCANL(R) specification is violated if VIO ≥ 3.3V. The performance of the EMC potentially degrades. C
VIO 11 None D
CANL1 12 The device cannot generate a full dominant signal on the CAN1 bus. No communication is possible. IOS current is potentially reached if VIO ≥ 3.3V. B
CANH1 13 The VCANL(R) specification is violated if VIO ≥ 3.3V. The performance of the EMC potentially degrades. C
STB1 14 The STB1 pin is stuck high. The CAN1 channel becomes stuck in low-power mode. B
Table 4-12 Pin FMA for Device Pins Short-Circuited to VBAT
Pin Name Pin No. Description of Potential Failure Effects Failure Effect Class
TXD1 1 An absolute maximum violation occurs. The device is potentially damaged. The device potentially cannot transmit data on the CAN1 bus. A
GND1 2 The device becomes unpowered. High IBAT current is possible. B
VCC 3 An absolute maximum violation occurs. The device is potentially damaged. The CAN bus potentially cannot communicate. A
RXD1 4 An absolute maximum violation occurs. The device is potentially damaged. The MCU potentially cannot receive data from the CAN1 bus. A
TXD2 5 An absolute maximum violation occurs. The device is potentially damaged. The device potentially cannot transmit data on the CAN2 bus. A
GND2 6 The device becomes unpowered. High IBAT current is possible. B
RXD2 7 An absolute maximum violation occurs. The device is potentially damaged. The MCU potentially cannot receive data from the CAN2 bus. A
STB2 8 An absolute maximum violation occurs. The device is potentially damaged. The CAN2 transceiver becomes stuck in low-power mode. A
CANL2 9 The CAN2 bus becomes stuck recessive. No communication is possible. IOS current is potentially reached. B
CANH2 10 The VCANL(R) specification is violated. The EMC performance of the transceiver potentially degrades. C
VIO 11 An absolute maximum violation occurs. The device is potentially damaged. A
CANL1 12 The CAN2 bus becomes stuck recessive. No communication is possible. IOS current is potentially reached. B
CANH1 13 The VCANL(R) specification is violated. The EMC performance of the transceiver potentially degrades. C
STB1 14 An absolute maximum violation occurs. The device is potentially damaged. The CAN1 transceiver becomes stuck in low-power mode. A