Application of TVS diode in communication port protection
The data exchange with the external communication bus needs a lot of equipment, to increase the surge protection function; as shown in Figure 7, the TVS diode tube in RS-485 ($14.5000) transceiver interface realize common mode surge protection function.
Application of TVS diode in circuit design TOP7 circuit diagram reading (133)

igure 7 communication port protection circuit

TVS diode is a protection of sensitive components from ESD devices and EMI surge pulse effective, low cost, with the rapid development and wide application of diode TVS, this paper introduces the characteristics and key parameters, TVS diode selection, typical applications, performance optimization and circuit design considerations, the best performance of TVS diode in the circuit design application, effectively solve the circuit transient overvoltage caused by interference problems, greatly improve the safety and reliability of electronic equipment.