4.5 Article

High performance, variation-tolerant CNFET ternary full adder a process, voltage, and temperature variation-resilient design

Journal

COMPUTERS & ELECTRICAL ENGINEERING
Volume 77, Issue -, Pages 205-216

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compeleceng.2019.05.018

Keywords

CNFET; MVL; Ternary full adder; Nanoelectronics

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Multiple-valued logic (MVL) decreases interconnection requirement and power consumption by realizing more data transmission over an interconnection wire. This paper investigates the carbon nanotube field effect transistors (CNFETs) using in the design of a ternary full adder cell. The proposed design takes advantage of the exceptional properties of CNFETs such as setting the desired threshold voltages by adjusting the carbon nanotubes (CNTs) diameters. We use Synopsys HSPICE simulator with a 32 nm Stanford CNFET model to simulate the ternary adders. We evaluate and examine the proposed design under different operational conditions such as different supply voltages (V), and different temperatures (T). Also, we investigate the designs under process variations (P) sensitivity. The simulation results show that the proposed design reduces the delay and energy consumption by up to 3.7X and 1.2X compared to the best state-of-the-art methods while being tolerant to process, voltage and temperature (PVT) variations. (C) 2019 Elsevier Ltd. All rights reserved.

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