A novel fast, low-power and high-performance XOR-XNOR cell

Many existing XOR-XNOR cells suffer from nonfull-swing outputs, high power consumption and low speed issues. In this paper, a new fast, full-swing and low-power XOR-XNOR cell, is presented. Simulation results in 90-nm CMOS technology show that the proposed circuit has rail to rail outputs Also, we have gained 11%-51%, 2%-19% and 18%-52% improvement in delay, power consumption and power-delay product (PDP), respectively. In order to do a comparison between the previously reported XOR-XNOR cells and our proposed circuit, they are embedded in a 4-2 compressor circuit and simulation results prove energy efficiency of ours in more complicated structures.