Integrated circuit protected against electrostatic overvoltages

Details Integrated circuit protected against electrostatic overvoltages Integrated circuit protected against electrostatic overvoltages

1994-08-04

1996-05-07

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361111, H02H 904

Patent

active

055152252

ABSTRACT:
A circuit protects pads of an integrated circuit having a plurality of power supply sources against electrostatic overvoltages. Each power supply is connected between a high voltage pad and a low voltage pad. Each pad of the circuit, as well as each power supply pad, is connected to the anode of a first diode having its cathode connected to a first conductive bus, and to the cathode of a second diode having its anode connected to a second conductive bus. A unidirectional clipping device is connected by its cathode to the first bus and by its anode to the second bus.

REFERENCES:
patent: 4819047 (1989-04-01), Gilfeather et al.
patent: 4996626 (1991-02-01), Say
patent: 5034845 (1991-07-01), Murakami
patent: 5239440 (1993-08-01), Merrill
Patent Abstracts Of Japan, vol. 9, No. 53 (E-301)(1776) Mar. 7, 1985 & JP-A-59191371.
Revue Generale De L'Electricite, No. 2, Feb. 1987, Paris, FR, pp. 19-24, C. Chapron, "Les Circuits Integres Bipolaires: Comment Diminuer Leur Sensibilite Aux Decharges Electrostatiques".

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