Electrostatic discharge (ESD) protection using NPN bipolar transistors

摘要

The circuit protecting the IC against electrostatic discharge includes an NPN transistor having a collector connected to the first I / O pad and an emitter connected to Vss. The Zener diode has an anode connected to both the cathode connected to the first I / O pad, the base of the NPN transistor, and the first resistor. The other end of the resistor is connected to Vss.