US Patent 7436201 Architecture for reducing leakage component in semiconductor devices

An architecture for reducing leakage component in semiconductor devices using a gated power supply is based on the supply being split into two parts. An alternate inverter is connected to a different power rail derived from the same single power rail. The power rails are enabled and disabled according to the value of a standby signal and an input signal. The standby signal is high in the standby mode and low in the active mode.