TJA1055 系列 5.25 V 增强 容错 CAN 收发器 - SOIC-14
Overview
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 VCC active
* 3 V interfacing with microcontroller possible with TJA1055T/3
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## 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 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
* 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
## Features