TJA1054A

Optimized for in-car low-speed communication
· Baud rate up to 125 kBaud
· Up to 32 nodes can be connected
· Supports unshielded bus wires
· Very low ElectroMagnetic Emission (EME) due to built-in slope control function and a very good matching of the CANL and CANH bus outputs
· Good ElectroMagnetic Immunity (EMI) in normal operating mode and in low power modes
· Fully integrated receiver filters
· Transmit Data (TxD) dominant time-out function.
Bus failure management
· Supports single-wire transmission modes with ground offset voltages up to 1.5 V
· Automatic switching to single-wire mode in the event of bus failures, even when the CANH bus wire is short-circuited to V_CC
· Automatic reset to differential mode if bus failure is removed
· Full wake-up capability during failure modes.
Protections
· Bus pins short-circuit safe to battery and to ground
· Thermally protected
· Bus lines protected against transients in an automotive environment
· An unpowered node does not disturb the bus lines. Support for low power modes
· Low current sleep and standby mode with wake-up via the bus lines
· Power-on reset flag on the output.

The TJA1054A is the interface between the 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. The device provides differential receive and transmit capability but will switch to single-wire transmitter and/or receiver in error conditions.

The TJA1054A is the ESD improved version of the TJA1054. For an overview of the differences between the TJA1054 and the TJA1054A, please refer to "Appendix A".

The TJA1054AT is, as the TJA1054T, pin and downwards compatible with the PCA82C252T and the TJA1053T. This means that these two devices can be replaced by the TJA1054AT or the TJA1054T with retention of all functions.

The most important improvements of the TJA1054 and the TJA1054A with respect to the PCA82C252 and the TJA1053 are: ` Very low EME due to a very good matching of the CANLand CANH output signals ` Good EMI, especially in low power modes ` Full wake-up capability during bus failures ` Extended bus failure management including short-circuit of the CANH bus line to VCC` Support for easy system fault diagnosis ` Two-edge sensitive wake-up input signal via pin WAKE.