Semiconductor integrated circuit device equipped with protective

Details Semiconductor integrated circuit device equipped with protective Semiconductor integrated circuit device equipped with protective

1996-09-20

1999-02-23

Medley, Sally C.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, H02H 904

Patent

active

058750860

ABSTRACT:
A protective system incorporated in a semiconductor integrated circuit device has a shared discharging line and a plurality of protective circuits each having a diode and a lateral bipolar transistor coupled between an associated pad and the shared discharging line. Surge voltage applied to the pad is discharged through the associated protective circuit to the shared discharging line so that a main circuit is not destroyed by the surge voltage.

REFERENCES:
patent: 5189588 (1993-02-01), Yano et al.
patent: 5212618 (1993-05-01), O'Neill et al.
patent: 5233448 (1993-08-01), Wu
patent: 5287241 (1994-02-01), Puar
patent: 5290724 (1994-03-01), Leach
patent: 5343352 (1994-08-01), Nagamine
Patent Abstracts of Japan, Abstract of JP-A 3 072 666, Mar. 27, 1991.

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