Semiconductor integrated circuit device

Details Semiconductor integrated circuit device Semiconductor integrated circuit device

1993-02-19

1995-05-16

Hoff, Marc S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361111, 361118, H02H 320

Patent

active

054166616

ABSTRACT:
A semiconductor integrated circuit device is equipped with a built-in power supply voltage conversion circuit which converts an external power supply voltage into an internal, lower voltage and supplies the internal voltage to internal circuits, and a clamping element which is inserted between an external power supply wiring connected to an external power supply pin and at least one of an input pin and an internal power supply wiring serving as an output line of the power supply voltage conversion circuit. As a result of distribution of electric charge to the capacitor formed between the internal power supply wiring and the substrate due to operation of the clamping element caused by the application of an overvoltage, it is possible to obtain an electrostatic withstand voltage comparable to that of a semiconductor integrated circuit device which lacks a built-in power supply voltage conversion circuit.

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