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TD5USPCAN TVS tube
SMBJ6.5A
C2
10uF, 25V
Rterminal
120
Ω
2.7 Recommended networking mode
CAN bus generally uses linear wiring, and the number of bus nodes can reach 110. Shielded twisted pair
is recommended for wiring, CANH and CANL are connected with twisted pair core, CGND is connected with
the shielding layer, and finally shielding layer is grounded at a single point. Regardless of the length of the bus,
both ends of the bus need to be connected with terminal resistors, which can be adjusted according to the
actual wiring, and the recommended value is generally 120 ohm. Because the lowest baud rate of
TD5(3)USPCAN is 5kbps, the longest communication distance of the bus can reach 10km. Figure 2.8 shows the
schematic diagram of recommended networking.
Figure 2.8 Schematic diagram of recommended networking
3.Product application
3.1 Glossary
1. UART
UART is the abbreviation of Universal Asynchronous Receiver/Transmitter. UART is a universal serial data
bus, which can realize full-duplex serial asynchronous communication.
