DESIGN OF LOW POWER CMOS THREE INPUT XOR XNOR
In this paper, we propose a new threeinput XOR/XNOR circuits to improve the speed and power as these circuits is basic building blocks of many arithmetic circuits. This paper evaluates and compares the performance of various XOR XNOR circuits. We start with selecting a basic cell including three independent inputs and two complementary outputs. Next we combine this basic cell with various correction and optimization techniques to build a perfect XOR XNOR circuit with full swing operation. The performance of the XOR XNOR circuits based on 90 nm CMOS technology process models at all range of the supply voltage is evaluated by the comparison of the simulation results obtained from MICRO WIND. The simulation results demonstrate that the proposed circuits are superior in terms of speed, power consumption and power delay product (PDP) with respect to other designs.