General description
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 kBd in passenger cars. The device provides differential receive and transmit capability but will switch to single-wire transmitter and/or receiver in error conditions.

FEATUREs
2.1 Optimized for in-car low-speed communication
■ Baud rate up to 125 kBd
■ 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

2.2 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 VCC
■ Automatic reset to differential mode if bus failure is removed
■ Full wake-up capability during failure modes

2.3 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

2.4 Support for low power modes
■ Low-current sleep mode and standby mode with wake-up via the bus lines
■ Power-on reset flag on the output