TJA1055

General description

The TJA1055 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 TJA1055 is the enhanced version of the TJA1054 and TJA1054A. TJA1055 has the same functionality but in addition offering a number of improvements. The most important improvements of the TJA1055 with respect to the TJA1054 and TJA1054A are:

• Improved ElectroStatic Discharge (ESD) performance
• Lower current consumption in sleep mode
• Wake-up signalling on RXD and ERR without V_CC active
• 3 V interfacing with microcontroller possible with TJA1055T/3

Features

Optimized for in-car low-speed communication

• Pin-to-pin compatible with TJA1054 and TJA1054A
• 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
• Very high ElectroMagnetic Immunity (EMI) in normal operating mode and in low power modes
• Fully integrated receiver filters
• Transmit Data (TxD) dominant time-out function
• High ESD robustness:
  • +-8 kV Electrostatic Discharge (ESD) protection Human Body Model (HBM) for off-board pins
  • +-6 kV Electrostatic Discharge (ESD) protection IEC 61000-4-2 for off-board pins
• Low-voltage microcontroller support

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
• Microcontroller interface without reverse current paths, if unpowered

Support for low power modes

• Low current sleep mode and standby mode with wake-up via the bus lines
• Software accessible power-on reset flag

Products/packages

Quality/reliability/chemical content

Quality and reliability disclaimer

Pricing/ordering/availability

Applications

Related applications
Body controller module

Design support

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
TJA1055 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