CAN bus physical layer for 5V nodes
The TJA1041AT/CM,118 is a half-duplex CAN transceiver from NXP, designed to interface a CAN protocol controller with the differential bus. It handles one driver and one receiver (1/1) and operates from a 4.75V to 5.25V supply, making it a direct fit for 5V microcontroller-based CAN nodes. The receiver hysteresis is specified at 70 mV, which improves noise immunity on the bus — a practical advantage in electrically noisy environments like factory floors or automotive body electronics.
The 4.75V to 5.25V supply range matches the VCC of classic 5V CAN controllers and 5V MCUs. If your design uses a 3.3V controller, this transceiver will not interface directly at the logic pins without a level shifter — the supply rail sets the logic threshold.
