TJ1054A is a fault-tolerant CAN transceiver, which is used in automotive bus communication. It supports up to 32 nodes with a maximum transmission speed of 125kBaud.
The TJA1054A serves as the interface between a protocol controller and the physical bus wires in a Controller Area Network (CAN). It is primarily intended for low-speed applications up to 125 kBaud in passenger cars, providing differential receive and transmit capability. The device supports unshielded bus wires and features built-in slope control to minimize ElectroMagnetic Emission (EME).
The transceiver includes robust protection mechanisms and automatic failure management. It can automatically switch to single-wire transmission modes if a bus wire is corrupted or short-circuited, even when the CANH line is shorted to Vcc. Additionally, it supports low power modes with wake-up capabilities via the bus lines.
| Supply voltage on pin Vcc | 4.75 - 5.25 V |
|---|---|
| Battery voltage on pin BAT | -0.3 to +40 V |
| Operating mode battery voltage | 5.0 to 27 V |
| Load dump voltage on pin BAT | -40 V max |
| Sleep mode battery current | 30 to 50 uA |
| CANH bus line voltage range | -27 to +40 V |
| CANL bus line voltage range | -27 to +40 V |
| CANH transmitter voltage drop | -1.4 V max |
| CANL transmitter voltage drop | -1.4 V max |
| Operating temperature range | -40 to +150 °C |
The device supports a baud rate up to 125 kBaud.
Up to 32 nodes can be connected using this transceiver.
Yes, it supports unshielded bus wires due to built-in slope control.
The device automatically switches to single-wire mode even in this failure condition.