Over-voltage tolerant input buffer having hot-plug capability

Details Over-voltage tolerant input buffer having hot-plug capability Over-voltage tolerant input buffer having hot-plug capability

2007-03-13

2007-03-13

Cho, James H. (Department: 2819)

Electronic digital logic circuitry

Interface

Logic level shifting

C326S083000, C710S302000

Reexamination Certificate

active

10786204

ABSTRACT:
An input buffer circuit and associated method operable in a normal mode and a hot-plug mode. In one example, the input buffer has an input and a buffer output, and the input buffer may include a pull-up path coupled between a first circuit supply and the buffer output; a pull-down path coupled between the buffer output and a ground reference voltage; a first transistor coupled between the input and the pull-up path to activate the pull-up path; a second transistor coupled between the input and the pull-down path to activate the pull-down path; and a third transistor for protecting the pull-up path from over-voltage. The input buffer circuit may be configured to prevent an over-voltage condition on each of the plurality of transistors and the input buffer circuit may be configured to allow a hot-plug operation.

REFERENCES:
patent: 5485107 (1996-01-01), Lacey et al.
patent: 5872464 (1999-02-01), Gradinariu
patent: 6023176 (2000-02-01), Chester
patent: 6191636 (2001-02-01), Cress et al.
patent: 6236235 (2001-05-01), Arai et al.
patent: 6323701 (2001-11-01), Gradinariu et al.
patent: 6346827 (2002-02-01), Yeung et al.
patent: 6411150 (2002-06-01), Williams
patent: 6784700 (2004-08-01), Hunt et al.
patent: 6784717 (2004-08-01), Hunt et al.
patent: 6842320 (2005-01-01), Mathur et al.

Affiliated with

Also associated with

Rating

Over-voltage tolerant input buffer having hot-plug capability does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Over-voltage tolerant input buffer having hot-plug capability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Over-voltage tolerant input buffer having hot-plug capability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3804019