Circuitry to provide a low power input buffer
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United States of America Patent
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Dec 7, 2010
Grant Date -
N/A
app pub date -
Jan 17, 2007
filing date -
Apr 17, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Input buffer circuitry that prevents high voltage output from high voltage circuitry from being applied to connected low voltage circuitry. An input of the input buffer circuitry receives signals from the high voltage circuitry. Pinch-off circuitry receives the input signals and prevents voltage above a threshold voltage from being applied to an output of the pinch-off circuitry. Boost circuitry controls the threshold voltage of the pinch-off circuitry and pull-up circuitry draws voltage from the output of the pinch-off circuitry to regulate the control by the booster circuitry.
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