High voltage tolerant receiver
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United States of America Patent
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May 21, 2013
Grant Date -
Aug 2, 2012
app pub date -
Jan 27, 2011
filing date -
Jan 27, 2011
priority date (Note) -
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Abstract
A high voltage tolerant single ended receiver circuit includes a voltage divider that is operative to divide in half single ended input signals that are greater than the threshold voltages of the voltage divider. A pass gate circuit is operative to receive single ended signals that are below the threshold voltages of the voltage divider. Output from the voltage divider is coupled to a first input of a modified Schmitt trigger circuit to control a high threshold level of the Schmitt trigger circuit. Output from the pass gate circuit is coupled to a second input of the modified Schmitt trigger circuit to control a low threshold level of the Schmitt trigger circuit.
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