TJA1054AT中文资料Fault-tolerant CAN transceiver数据手册恩XP规格书

描述 Description

Archived content is no longer updated and is made available for historical reference only.
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.
The TJA1054A is the ElectroStatic Discharge (ESD) improved version of the TJA1054.
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 ElectroMagnetic Emission (EME) due to a very good matching of the CANL and CANH output signals
Good ElectroMagnetic Emission (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 1

特性 Features

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
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
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 mode and standby mode with wake-up via the bus lines
Power-on reset flag on the output