The MCP2542 Click Board™ is the CAN bus transceiver, which allows TTL/CMOS level signals typically found on MCUs, to be used for the communication via the CAN bus, which uses the higher voltage levels and differential signals. In addition, this Click Board™ protects the sensitive MCU part of the device from excessive voltage spikes and electrostatic discharges (ESD), typically observed in automotive systems, where CAN communication is extensively used.
The MCP2542 Click Board™ uses the MCP2542WFD, a CAN FD transceiver, which offers a robust CAN bus interface, with ESD protection up to 13 kV, permanent dominant detection on TXD and CAN bus, battery short circuit and electrical transients suppression on the CAN bus, thermal protection, and more.