Semiconductor device having an electrostatic discharging protect

Details Semiconductor device having an electrostatic discharging protect Semiconductor device having an electrostatic discharging protect

1997-08-08

1999-03-30

Hardy, David B.

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

257 43, 257528, 257666, 257207, 257211, H07L 2362

Patent

active

058893083

ABSTRACT:
Disclosed is a semiconductor device capable of protecting an internal circuit from an ESD impact, damage and a mistaken working caused by an electrostatic discharge, a surge pulse and a noise, and more particularly to a semiconductor device capable of protecting an internal circuit from an external abnormal input without a protection circuit. The semiconductor device includes a varistor coupled to a conductor for discharging an abnormal input signal input to a ground voltage level. The varistor acts as a conductor when an input signal is an abnormal input signal and acts as an insulator when the input signal is a normal input signal. The use of the varistor may provide an improved ESD protection circuit and then promote the reliability of the semiconductor device.

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