The SIT1145AQ is an interface chip applied between CAN protocol controller and physical bus, supports 5Mbps Flexible Data-Rate, and has the capability of differential signal transmission between bus and CAN protocol controller. The SIT1145AQ features very low power consumption in Standby and Sleep modes and supports ISO 11898-2:2016 compliant CAN Partial Networking by means of a selective wake-up function. Partial Networking function has been embedded into the SIT1145AQ/FD. This function is called “FD-passive”, which can ignore CAN FD frames while waiting for a valid wake-up frame in Sleep/Standby mode. Thisadditional feature of partial networking is the perfect fit for networks that support both CAN FD and standard CAN 2. 0 communications. It allows normal CAN controllers that do not need to communicate CAN FD messages to remain in partial networking Sleep/Standby mode during CAN FD communication without generating bus errors. The SIT1145AQ is suitable for use in 12V and 24V system. It supports ±58V BUS protection function. The SIT1145AQ uses advanced power management to adjust the power supply of the entire node and supports local and remote wake up functions. The I/O levels are automatically adjusted to the I/O levels of the controller, allowing the SIT1145AQ to interface directly with 3. 3V to 5V microcontrollers. An SPI interface is provided for transceiver control and status information retrieval. The bus connections are truly floating when power is off.