TH8056 is Melexis' physical layer CAN transceiver for single-wire data links that can be applied to CAN2.0. The operating voltage range of the device is 5-27V, the logic input is compatible with 3.3-5V, and it can be powered by the automobile power supply. The typical transmission rate of 100kbit\/s CAN be used, which meets the design requirements of the author's high speed CAN communication. CAN transceiver TH8056 has a very low leakage current of 20uA, with thermal loading and short circuit protection functions, which can ensure that the device is not burned when the bus is overloaded or short circuit, the pen has overload protection and short circuit protection can greatly save the author's later circuit design, no need to increase the design circuit. The TH8056 is designed to comply with the single-wire CAN physical layer specification GMW3089 V2.x and supports a number of other features such as undervoltage locking and timeout functionality for fault-blocking input signals, with a typical power consumption of 30μA in sleep mode for excellent low-power performance.