Voltage clamp device for monolithic circuits

Details Voltage clamp device for monolithic circuits Voltage clamp device for monolithic circuits

1977-06-24

1978-12-26

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

307303, 361 91, H02H 322

Patent

active

041319281

ABSTRACT:
A method and circuit are disclosed for providing input voltage transient signal protection to integrated circuits. The circuit comprises two NPN transistors fabricated integrally with the integrated circuit. The emitter of the first one of the transistors is adapted to be connected to an input of the integrated circuit. The N-epi collector regions of both transistors are connected, as is the emitter of the second transistor, to the P-substrate of the integrated circuit. The bases of the two transistors are connected together.

REFERENCES:
patent: 3515945 (1970-06-01), Bohm
patent: 3601625 (1971-08-01), Redwine et al.
patent: 4005342 (1977-01-01), Davis

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