Abstract: In today’s world power consumption is become major power concern in VLSI designing. Portable devices like laptops, cell phones, and computers require a circuitry that consumes less power. Also large power dissipation is directly associated with cost and complexity of the devices. High speed multiplier plays a dominant role in designing of digital circuits. The low power CMOS devices can be used in real time image, speech processing and 3D computers graphics application, mainly the fields where high speed is required.

Keywords: MUX, MTCMOS, CMOS, Low Power VLSI, Leakage current.