Abstract: Described is an integrated circuit (IC) which comprises: a first driver having stacked devices, the first driver operable on a first power supply and a first ground supply, the first driver to receive an input signal with a signal swing according to a second power supply and a second ground supply, the second power supply having a voltage level lower than a voltage level of the first power supply, and the second ground supply having a voltage level higher than a voltage level of the first ground supply; a second driver coupled to the first driver, the second driver operable on the second power supply and the second ground supply; and a pair of by-pass devices coupled to the first and second drivers, the pair of by-pass devices to provide the second power supply and the second ground supply according to an output of the first driver.