Electronic digital logic circuitry – Multifunctional or programmable
Patent
1993-11-08
1995-08-08
Westin, Edward P.
Electronic digital logic circuitry
Multifunctional or programmable
326 81, 326 58, 326 83, H03K 190175
Patent
active
054402441
ABSTRACT:
The design and implementation of a low power CMOS bi-directional I/O buffer that translates low voltage core logic level signals into the highest logic level signals to drive the final output stage which outputs a selectable logic level signal. The buffer further translates input signals of a variety of logic levels into low voltage core logic level signals. In either case, AC and DC power consumption is minimized in a mixed power supply environment that requires voltage translation to represent the proper binary logic levels. An multivoltage I/O buffer having multiple input-receiving NOR gates is also described. The NOR gates of the multivoltage I/O buffer having triggering levels optimized for differing core voltage levels. Also described is a host adapted system for interfacing between and removable peripheral card and a host computer. The host adaptor includes an integrated circuit employing the multivoltage bi-directional I/O buffer.
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Assar Mike
Clark Jerry L.
Kashmiri Abdul Q.
Richter Bryan M.
Singhal Dave M.
Cirrus Logic Inc.
Sanders Andrew
Westin Edward P.
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