Semiconductor integrated circuit protection arrangement

Details Semiconductor integrated circuit protection arrangement Semiconductor integrated circuit protection arrangement

1979-09-04

1981-10-13

Miller, J. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

307303, 357 41, H02H 904

Patent

active

042951763

ABSTRACT:
An array of semiconductor circuits integrated in a single semiconductor body substrate, each circuit having a separate input terminal, is protected from overvoltages in the inputs by means of a separate diode for each such circuit connected between its protected input node and a reference terminal (V.sub.DD) in common with all the other circuits. In addition, the high current path of a single auxiliary transistor is arranged to provide, in the presence of overvoltages, a low resistance path between the reference terminal (V.sub.DD) and the wide area substrate contact V.sub.SS in order to protect the input nodes in case of overvoltages when reference terminal (V.sub.DD) is disconnected ("floating").

REFERENCES:
patent: 3407339 (1968-10-01), Booher
patent: 3676742 (1972-07-01), Russell et al.
patent: 3819952 (1974-06-01), Enomoto et al.
patent: 4044373 (1977-08-01), Nomiya et al.
patent: 4189739 (1980-02-01), Copeland

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