A Novel High-speed Adder-Subtractor Design based on CNFET
نویسندگان
چکیده
Carbon Nanotube filed-effect transistor (CNFET) is one of the promising alternatives to the MOS transistors. The geometrydependent threshold voltage is one of the CNFET characteristics, which is used in the proposed design. In this paper, we present a novel high speed Adder-subtractor cell using CNFETs based on XOR gates and multiplexer. Presented design uses fourteen transistors, ten for full adder and four to modify the cell for subtraction. Simulation results show significant improvement in terms of delay and area saving with 48% and 11% respectively compared to the latest design. Simulations were carried out using HSPICE based on CNFET model with optimized design parameters.
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