Design of new full adder cell using hybrid-CMOS logic style

Abstract

In this paper, we propose a novel 1-bit full adder using hybrid-CMOS logic style. The new full adder is based on a novel XOR-XNOR circuit that generates XOR and XNOR full-swing outputs simultaneously and outperforms its best counterpart showing 28% improvement in power-delay product (PDP). Design of proposed full adder is based on improvement in the PDP and it provides full-swing output with good driving capability. Simulations demonstrate that full adder successfully operates in the PDP compared to similar circuits.