Method and circuit for producing high-speed counts

Details Method and circuit for producing high-speed counts Method and circuit for producing high-speed counts

1997-03-05

1999-09-21

Heckler, Thomas M.

G06F 104

Patent

active

059565020

ABSTRACT:
A counter circuit includes a series of registers driven by two phase shifted clocks. A clock generator in the counter circuit generates four asymmetrical clock signals to drive each of the registers. The registers are formed from input and output stages, each having two sets of switches. The first set of switches in each stage provides a supply voltage to a stage output in response to the asymmetrical clocks. The second set of switches supply ground to the stage output in response to the asymmetrical clocks. To accelerate response of the switching circuits, isolation switches decouple the first set of switches in each pair from the stage output during switching of the second set of switches, thereby removing loading of stage output by the second set of switches.

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