TJA1054A

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.

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 V_CC
• Support for easy system fault diagnosis
• Two-edge sensitive wake-up input signal via pin WAKE

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

Products/packages

The variants in the table below are discontinued. See the table Discontinued information for more information.

Quality/reliability/chemical content

The variants in the table below are discontinued. See the table Discontinued information for more information.

Quality and reliability disclaimer

Pricing/ordering/availability

Discontinued information

Applications

Related applications
Body controller module

Block diagrams/pinning

Design support

Application Notes

AH_FTCAN3; Fault-tolerant CAN Transceiver (2001-12-20)

AN00094; TJA1041/1041A high speed CAN transceiver (2006-11-08)

Support Documents

web; IBIS and HSPICE Model ()

75016161; NXP Automotive networking solutions (2007-09-01)

75015743; Proven performance ensures automotive applications can always communicate (2006-09-01)

75015741; The vital link in the interconnected car (2006-09-01)

Parametrics/similar products

Similar products
TJA1054A links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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Disclaimers

• General product disclaimer
• Quality and reliability disclaimer