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CAN transceiver

Connecting a CAN controller to the bus-lines

The NCV7351 CAN transceiver by ON Semiconductor is the interface between a CAN protocol controller and the physical bus and may be used in both 12-V and 24-V systems.

Block diagram of the CAN transceiver (Photo: ON Semiconductor)

The transceiver complies with ISO 11898-2:2004 meaning it does not support higher bit-rates than 1 Mbit/s. It provides differential transmit capability to the bus and differential receive capability to the CAN controller. The NCV7351 is an addition to the CAN high−speed transceiver family complementing NCV734x CAN stand−alone transceivers and previous generations such as AMIS42665, AMIS3066x, etc. Due to the common−mode voltage range of the receiver inputs and other design features, the NCV7351 is able to reach outstanding levels of electromagnetic susceptibility (15-kV ESD pulses), said the company.

Similarly, extremely low electromagnetic emission (EME) is achieved by the matching of the output signals. The product is AEC-Q100 qualified, which is necessary for automotive applications. The bus-pins are protected against transients in an automotive environment. They are short circuit proofed to supply voltage and ground. The component features a TXD dominant time-out function. It is suitable for 3-V and 5-V micro-controllers with integrated CAN modules.