ESD protective circuit having low leakage current

Details ESD protective circuit having low leakage current ESD protective circuit having low leakage current

2007-08-10

2010-06-29

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

C361S091100, C361S111000

Reexamination Certificate

active

07746611

ABSTRACT:
An ESD protective circuit having a contact terminal, a first supply voltage terminal for a first supply potential, a second supply voltage terminal for a second supply potential, a transistor chain having several transistors, wherein drain terminals of the transistors are connected to one of the supply voltage terminals, wherein the control terminal of a first transistor of the transistor chain is connected to the other supply voltage terminal, wherein the source terminal of the last transistor of the transistor chain is connected to the contact terminal, and a current source which is connected to a source terminal of at least one of the transistors of the transistor chain and is able to provide a current which compensates, up to a maximum tolerable voltage deviation from the first or second supply potential at the contact terminal, a current flowing into or from the source terminal.

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