Protection circuit for integrated circuit devices

Details Protection circuit for integrated circuit devices Protection circuit for integrated circuit devices

1985-06-07

1986-06-17

Larkins, William D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

357 2313, 357 235, 357 38, 357 48, 361 91, H01L 2704, H01L 2978, H01L 29743, H02H 904

Patent

active

045959412

ABSTRACT:
The protection circuit is a four layer PNPN device which includes a PMOS IGFET. The device is designed to pass current to ground when large transients are imposed across its two external terminals, thereby protecting the integrated circuit.

REFERENCES:
patent: 3432731 (1969-03-01), Whittier
patent: 3739236 (1973-06-01), Loro
patent: 3831187 (1974-08-01), Neilson
patent: 3858235 (1974-12-01), Schild
patent: 4224634 (1980-09-01), Svedberg
patent: 4244000 (1981-01-01), Ueda et al.
patent: 4271445 (1981-06-01), Hartman et al.
patent: 4282555 (1981-08-01), Svedberg
patent: 4331884 (1982-05-01), Svedberg
patent: 4396932 (1983-08-01), Alonas et al.
Hamilton & Howard, Basic Integrated Circuit Engineering, (McGraw-Hill, NY, 1975), pp. 4-7, 12-13, 18-29.

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