Digital circuits having improved transistors, and methods therefor
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United States of America Patent
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Dec 5, 2017
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app pub date -
Apr 6, 2017
filing date -
Feb 18, 2011
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Abstract
Digital circuits are disclosed that may include multiple transistors having controllable current paths coupled between first and second logic nodes. One or more of the transistors may have a deeply depleted channel formed below its gate that includes a substantially undoped channel region formed over a relatively highly doped screen layer formed over a doped body region. Resulting reductions in threshold voltage variation may improve digital circuit performance. Logic circuit, static random access memory (SRAM) cell, and passgate embodiments are disclosed.
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