Fault-Tolerant CAN Transceiver

TJA1055T

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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 of 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. Key highlights of the TJA1055.

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

Product Details

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Block Diagram

TJA1055 Block Diagram

TJA1055 Block Diagram
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Features

Key Features

  • Baud rate up to 125 kBd
  • Up to 32 nodes can be connected
  • Supports unshielded bus wires
  • Very good EMC performance
  • 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.
  • Automatic reset to differential mode if bus failure is removed
  • Full wake-up capability during failure modes

Design Resources

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Documentation

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