The TJA1043 high-speed CAN transceiver provides an interface between a Controller
Area Network (CAN) protocol controller and the physical two-wire CAN bus. The
transceiver is designed for high-speed CAN applications in the automotive industry,
providing differential transmit and receive capability to (a microcontroller with) a CAN
protocol controller.
The TJA1043 belongs to the third generation of high-speed CAN transceivers from NXP
Semiconductors, offering significant improvements over first- and second-generation
devices such as the TJA1041A. It offers improved ElectroMagnetic Compatibility (EMC)
and ElectroMagnetic Discharge (ESD) performance, very low power consumption, and
passive behavior when the supply voltage is turned off. Advanced features include:
- Low-power management controls the power supply throughout the node while
supporting local and remote wake-up with wake-up source recognition
- Several protection and diagnostic functions including bus line short-circuit detection
and battery connection detection
- Can be interfaced directly to microcontrollers with supply voltages from 3 V to 5 V
The TJA1043 implements the CAN physical layer as defined in the current ISO11898 standard
(ISO11898-2:2003, ISO11898-5:2007 and the pending updated version of ISO11898-2:2016).
Pending the release of ISO11898-2:2016 including CAN FD and SAE-J2284-4/5, additional
timing parameters defining loop delay symmetry are specified. This implementation
enables reliable communication in the CAN FD fast phase at data rates up to 5
Mbit/s.
These features make the TJA1043 the ideal choice for high speed CAN networks
containing nodes that need to be available all times, even when the internal VIO and VCC
supplies are switched off.
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