Compact logic evaluation gates using null convention
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United States of America Patent
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Jun 27, 2017
Grant Date -
May 19, 2016
app pub date -
Nov 14, 2015
filing date -
Nov 15, 2014
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Abstract
Compact logic evaluation gates are built using null convention logic (NCL) circuits. The inputs to a null convention circuit include a NCL true input and a NCL complement input. The NCL circuit includes a gate coupled to the pair of inputs, where the gate comprises a plurality of transistors. The transistors allow for logical signal capture, provide a pair of cross-coupled inverters for data storage, and include a first and second pull-down device. The first pull-down device causes a first side of the pair of cross-coupled inverters to go to a “0” state when a “1” is applied to the NCL true input, and the second pull-down device causes a second side of the pair of cross-coupled inverters to go to a “0” state when a “1” is applied to the NCL complement input.
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