Silicon controlled rectifier electrostatic discharge...

Active solid-state devices (e.g. – transistors – solid-state diode – Regenerative type switching device – Combined with field effect transistor

Reexamination Certificate

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Details

C257S173000, C257S355000, C257S358000, C257S359000, C257S360000, C257SE29215, C257SE29216, C257SE29217, C257SE29218, C438S135000

Reexamination Certificate

active

11032462

ABSTRACT:
An electrostatic discharge (ESD) protection circuit in a semiconductor integrated circuit (IC) having protected circuitry. The ESD protection circuit includes a silicon controlled rectifier (SCR) having at least one first type high dopant region coupled to a first reference potential of the protected circuitry, and at least one second type high dopant region coupled to a second reference potential of the IC. The SCR is triggered by an external on-chip trigger device, which is adapted for injecting a trigger current into at least one gate of the SCR.

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