Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Patent
1997-04-22
1998-09-22
Leja, Ronald W.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
327535, H02H 320
Patent
active
058123547
ABSTRACT:
A semiconductor integrated circuit device communicates with an external device through signal terminals, and is powered through power terminals; protective circuits are respectively connected to the signal terminals for discharging static electric charge through a shared conductive line to the power terminal connected to a ground line, and a potential level of the semiconductor substrate is propagated through the shared conductive line to a detecting circuit for reversely biasing the semiconductor substrate at intervals; and an interrupting circuit discriminates isolating state of the power terminal from the ground line so as to cut off a current path between the shared conductive line and the detecting circuit.
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Leja Ronald W.
NEC Corporation
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