Input protector device for semiconductor device

Details Input protector device for semiconductor device Input protector device for semiconductor device

1988-10-14

1990-06-26

James, Andrew J.

357 50, 357 51, 357 59, 357 20, H01L 2700

Patent

active

049376390

ABSTRACT:
An input protector device for a semiconductor device such as a CMOS device, in which a first resistor is formed on an insulating film of a semiconductor substrate, and a second resistor is formed of an impurity diffusion region in the substrate, the first and second resistors and a capacitor being coupled to one another in series to constitute a filter circuit, and in which first and second diodes each cooperated with at least one of the first and second resistors, by-passing noises having low and high voltages, respectively, and a high frequency noise is cut by the filter circuit, thereby effectively preventing latchup.

REFERENCES:
patent: 4288829 (1981-09-01), Tango
patent: 4777518 (1988-10-01), Mihara

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