11.2 Typical Application

Figure 36 illustrates a typical application of the SN65HVD23x family. The output of the host µP's CAN controller (TXD) is connected to the transceivers driver input, pin D, and the transceivers receiver output, pin R, is connected to the input of the CAN controller (RXD). The transceiver is attached to the differential bus lines at pins CANH and CANL. Typically, the bus is a twisted pair of wires with a characteristic impedance of 120 Ω, in the standard half-duplex multipoint topology of Figure 37. Each end of the bus is terminated with 120 Ω resistors in compliance with the standard to minimize signal reflections on the bus.

Figure 36. Details of a Typical CAN Node

Figure 37. Typical CAN Network