Patent ID: 8527797

Claim:
A system comprising: a first asynchronous logic stage; a second asynchronous logic stage including a terminal coupled to a power supply or to a ground via a switch, wherein the switch comprises a transistor wherein a control signal is provided to a gate of the transistor, and wherein the transistor is selectively activated in response to the control signal being sent from a preceding asynchronous logic stage to the second asynchronous logic stage to enable power to the second asynchronous logic stage; a subsequent stage, wherein a body terminal of the transistor is coupled to receive a second control signal from the subsequent stage, wherein a first value of the second control signal causes the transistor to electrically isolate at least a portion of the second asynchronous logic stage from the power supply or from the ground, and wherein a second value of the second control signal causes the transistor to electrically couple the portion of the second asynchronous logic stage to the power supply or to the ground.