A novel design ofmultiplexer based on nano-scale quantum-dot cellular automata

摘要

Quantum-dot Cellular Automata (QCA) is known as one of best alternative technologies for CMOS, on nano-scale dimensions, which allows digital circuits to be designed with high speed and density. In this paper, a novel 2:1 multiplexer in QCA technology is proposed. This proposed QCA multiplexer uses a new formulation based on an introduced MV32 gate. The MV32 gate has three inputs and two outputs and operates based on cell interactions. A multi-layer design for proposed 2:1 QCA multiplexer is provided. The simulation results obtained by the software, QCADesigner2.0.3, confirm that the proposed multiplexerworkswell and can be applied as a high performance design, in QCA technology.Moreover, the 2:1QCA multiplexer is used to create 4:1 and 8:1QCAmultiplexers. The results of comparisons show that the proposed structures have so better performance than many previous designs.