Semiconductor device

Details Semiconductor device Semiconductor device

2006-06-13

2006-06-13

Vu, Phuong T. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

C326S015000

Reexamination Certificate

active

07061735

ABSTRACT:
A semiconductor device has an electrostatic protection diode in a signal input portion thereof and is accompanied by a parasitic transistor between the diode and an output control transistor. The semiconductor device further has a dummy transistor that is formed closer than the output control transistor to the electrostatic protection diode, and an output logic determining circuit that keeps the output signal at a predetermined logic level so long as the parasitic transistor formed between the electrostatic protection diode and the dummy transistor is on. With this configuration, malfunctioning caused by a parasitic transistor can be prevented without the use of an externally fitted component.

REFERENCES:
patent: 5789968 (1998-08-01), John
patent: 6160416 (2000-12-01), Adduci et al.
patent: 6480038 (2002-11-01), Horn
patent: 7-42146 (1995-07-01), None
patent: 10-200056 (1998-07-01), None

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