TJA1054A 查看數據表（PDF） - Philips Electronics

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TJA1054A

Fault-tolerant CAN transceiver

Philips Electronics 

Philips Semiconductors

Fault-tolerant CAN transceiver

Product specification

TJA1054A

FEATURES

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 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.

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 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 CANL

and 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.

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.

ORDERING INFORMATION

TYPE

NUMBER

TJA1054AT

TJA1054AU

NAME

SO14

−

PACKAGE

DESCRIPTION

plastic small outline package; 14 leads; body width 3.9 mm

bare die; 1990 × 2730 × 375 µm

VERSION

SOT108-1

−

2004 Mar 23

2

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