Data input buffer in semiconductor device

Details Data input buffer in semiconductor device Data input buffer in semiconductor device

2008-01-08

2008-01-08

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S068000, C326S086000, C327S109000, C327S333000

Reexamination Certificate

active

07317338

ABSTRACT:
The present invention provides an input buffer for use in a semiconductor device reducing a current consumption and maintaining a reliable operation speed by detecting a level of the reference voltage. The input buffer includes a comparator, having a first biasing device controlled by a buffer enable signal, for sensing a logic level of an input data by comparing voltage levels of a reference voltage and the input data, a reference voltage detector for detecting the level of the reference voltage, and a second biasing device controlled by an output signal from the reference voltage detector and parallel connected to the first biasing device.

REFERENCES:
patent: 5736871 (1998-04-01), Goto
patent: 5939937 (1999-08-01), Terletzki
patent: 2006/0132171 (2006-06-01), Nguyen
patent: 502121 (2002-09-01), None
Gray et al, Analysis and Design of Analog Integrated Circuits, 2001, John Wiley & Sons, Inc., Fourth Edition, pp. 257-258.

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