TJA1054T データシートの表示（PDF） - Philips Electronics

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TJA1054T

Fault-tolerant CAN transceiver

Philips Electronics 

Philips Semiconductors

Fault-tolerant CAN transceiver

Preliminary specification

TJA1054

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 Radio Frequency Interference (RFI) due to

built-in slope control function and a very good matching

of the CANL and CANH bus outputs

• Fully integrated receiver filters

• Permanent dominant monitoring of transmit data input

• Good immunity performance of ElectroMagnetic

Compatibility (EMC) in normal operating mode and in

low power modes.

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

• Fully wake-up capability during failure modes.

GENERAL DESCRIPTION

The TJA1054 is the interface between the protocol

controller and the physical wires of the bus lines in a

Control Area Network (CAN). It is primarily intended for

low-speed applications, up to 125 kBaud, in passenger

cars. The device provides differential transmit capability

but will switch in error conditions to single-wire transmitter

and/or receiver.

The TJA1054T is pin and upwards compatible with the

PCA82C252T and the TJA1053T. This means that these

two devices can be replaced by the TJA1054T with

retention of all functions.

The most important improvements are:

• Very low RFI due to a very good matching of the CANL

and CANH bus lines outputs

• Good immunity performance of EMC, especially in low

power modes

• Fully wake-up capability during failure modes

• Extended bus failure management including

short-circuit of the CANH bus line to VCC

• Supports easy fault localization

• Two-edge sensitive wake-up input signal via pin WAKE.

Protection

• Short-circuit proof to battery and ground in

12 V powered systems

• 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.

ORDERING INFORMATION

TYPE

NUMBER

TJA1054T

NAME

SO14

PACKAGE

DESCRIPTION

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

VERSION

SOT108-1

1999 Feb 11

2

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