Low power XOR gate design

Based on the analysis of existing XOR gate circuits,a pass transistor based low power XOR gate was proposed.Since the proposed design implements full swing for internal node signals,it improves driven strength and avoids sub-threshold power from succeeded inverters,achieving its low power consumption.Under power supply voltages 5,3.3,1.8 V,using 0.24 μm process to carry out PSPICE simulation,the proposed XOR gate can save power consumption up to 36.5%,while power-delay-product up to 68.0% as compared with the published designs,which shows that the proposed design has advantages in power and delay.