High-speed fully balanced differential flip-flop with reset
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United States of America Patent
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-
Feb 3, 2004
Grant Date -
Aug 28, 2003
app pub date -
Feb 28, 2002
filing date -
Feb 28, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A differential D flip-flop is disclosed including respective master and slave cells. The master cell comprises a first data set circuit and a first data store circuit. The data set circuit has a first differential input and a first differential output. The first data store circuit couples to the output of the first data set circuit. The cell further includes a differential clock circuit and a differential reset circuit. The clock circuit having complementary clock inputs to alternately set and store data in the data set and data store circuits. The differential reset circuit ties to the differential output and is operative in response to a reset signal to force the differential output to a predetermined logic level. The differential reset circuit includes matched complementary reset drivers to exhibit like capacitances. The slave cell is formed substantially similar to the master cell, and includes a second differential input coupled to the first differential output of the master cell.
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