Changed device model electrostatic discharge protection circuit

Details Changed device model electrostatic discharge protection circuit Changed device model electrostatic discharge protection circuit

1995-11-20

1998-03-17

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361119, H02H 900

Patent

active

057294194

ABSTRACT:
An output circuit for an integrated circuit which provides protection for the integrated circuit during a charged device model (CDM) electrostatic discharge (ESD) event. The output circuit includes a first FET connected across a first voltage supply rail (V.sub.CC or ground) and an output pad. A first driving circuit drives the gate of the first transistor. One or more CDM ESD protection circuits are connected between the gate of the first transistor and the output pad. These protection circuits provide relatively low impedance current paths which minimize current flow through the gate oxide layer of the first FET during a CDM ESD event.

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