AC-DC input buffer

Details AC-DC input buffer AC-DC input buffer

2006-06-08

2008-09-30

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C330S260000

Reexamination Certificate

active

07429882

ABSTRACT:
An inverting input buffer that uses the best features of an AC input buffer (low delay, high speed, high input voltage swing range) and a DC input buffer (stability, reliability, ‘automatic’ high and low data setup, input VIL and VIH “Voltage Input Low” and “Voltage Input High” margins). The delay though the buffer with a nominal load is very small. Optionally, a voltage tolerant input circuit is coupled to the DC input, which enables the DC input buffer to tolerate higher voltage swings, thus allowing a single buffer to switch both high (e.g. 2.5 volts-5 volts in a 1.2 volt system) and low input voltages (e.g. below 2.5 volts in a 1.2 volt system).

REFERENCES:
patent: 4293208 (1981-10-01), Bagdis
patent: 5128560 (1992-07-01), Chern et al.
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patent: 5994939 (1999-11-01), Johnson et al.
patent: 6304149 (2001-10-01), Kim
patent: 6369631 (2002-04-01), Sachdev et al.
patent: 6853233 (2005-02-01), Terletzki et al.
patent: 7123080 (2006-10-01), Furukawa et al.

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