Input protection structure for integrated circuits

Details Input protection structure for integrated circuits Input protection structure for integrated circuits

1990-10-30

1993-02-16

Jackson, Jr., Jerome

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

Integrated circuit structure with electrically isolated...

Passive components in ics

257577, H01L 2702, H01L 2972, H01L 2978

Patent

active

051875624

ABSTRACT:
An input protection structure for integrated circuits to be connected between an input and a reference potential includes a resistor. At least one transistor has a collector connected to the input, a base connected through the resistor to the reference potential, and an emitter connected to the reference potential. A semiconductor substrate has a first conduction type. The collector is in the form of a buried collector of a second conduction type in the semiconductor substrate. The base is in the form of at least one doped zone of the first conduction type having a base connection. The emitter is in the form of a doped zone of the second conduction type having an emitter connection. The resistor is in the form of at least one further doped zone of the first conduction type being connected to the emitter exclusively through the emitter connection and being connected to the base exclusively through the base connection.

REFERENCES:
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patent: 4486770 (1984-12-01), Woodwards
patent: 4800416 (1989-01-01), Musemeci
Patent Abstracts of Japan, vol. 5, No. 145 (E-74)(817) Sep. 12, 1981, & JP-1-5679463 (Matsushita) Jun. 30, 1981.
Patent Abstracts of Japan, vol. 9, No. 193 (E-334)(1916) Aug. 9, 1985, & JP-A-6059762 (Nippon Denki) Apr. 6, 1985.
IBM Technical Disclosure Bulletin, vol. 20, No. 11B, Apr. 1978, New York, US; p. 4811.
Patent Abstracts of Japan, vol. 6, No. 103 (E-112)(981) Jun. 12, 1982, & JP-A-5734361 (Tokyo) Feb. 24, 1982.
Publication: Technologie Hochintegrierter Schaltungen, 1988, pp. 67-72, Springer-Verlag.

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