An integrated circuit output driver is provided that exhibits improved performance and signal integrity. In one embodiment, the integrated circuit output driver is fabricated in a process having thin-gate MOS transistors and thick-gate MOS transistors and includes a predriver circuit, a level shifter circuit, and a driver circuit. The predriver circuit is formed predominantly of thin-gate transistors, and the driver circuit is formed predominantly of thick-gate transistors. In other embodiments, a low-pass power supply filter is provided. In still other embodiments, a voltage regulator circuit is provided, wherein an operating potential of at least one of the predriver circuit and the level shifter circuit is less than the specified supply voltage. In one embodiment, the voltage regulator circuit produces: i) a reduced internal supply voltage that is applied to the predriver circuit; and ii) an elevated ground voltage that is applied to the level shifter circuit.