Input-output circuit for increasing immunity to voltage spikes

Details Input-output circuit for increasing immunity to voltage spikes Input-output circuit for increasing immunity to voltage spikes

1995-06-06

1997-07-29

Westin, Edward P.

Electronic digital logic circuitry

Interface

Current driving

326 17, 326 16, 326 27, 326 33, 327108, H03K 1901, H03K 190175

Patent

active

056525273

ABSTRACT:
An input/output circuit for increasing immunity to voltage spikes from voltage supplies is provided. The circuit includes a first pair of transistors each having their drains connected to an output terminal and their sources connected to voltage supplies. A mechanism is connected to electrically separated voltage supplies to alternately turn on one of the first pair of transistors responsive to an input signal. A transistor is utilized to provide feedback to limit the rise in a ground voltage supply as occurs during ground bounce.

REFERENCES:
patent: 4862018 (1989-08-01), Taylor et al.
patent: 5138194 (1992-08-01), Yoeli
patent: 5394034 (1995-02-01), Becker et al.
patent: 5430335 (1995-07-01), Tanoi

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