4-Input NAND and NOR Gates Based on Two Ambipolar Schottky Barrier FinFETs

Talha Furkan Canan, Savas Kaya, Avinash Karanth, Ahmed Louri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report on four-input NAND and NOR gates using only two 7nm Schottky-Barrier (SB) independent-gate FinFETs transistors that take advantage of gate workfunction engineering (WFE). Careful optimization of workfunctions at the source/drain contacts as well as two independent gates of the SB-FinFETs provide unprecedented control of the threshold in the ambipolar device operation. It is used in this work to tailor 4-input NAND and NOR functionalities out of only two transistors (2T), utilizing only two different metal workfunctions in a given gate. Correct operation of multi-input gates for supply voltages as low as VDD = 0.5V has been verified using 2D TCAD circuit simulations. Switching performance of the proposed 4-input gates indicate that they have 45% reduction in power-delay product (PDP) as compared to the conventional 16T FinFET counterparts, which is due to substantially lower power dissipation at the expense of slower transitions. A JK Flip-Flop circuit is designed using the proposed four-input NAND gate that illustrates its advantages for the logic operation.

Original languageEnglish (US)
Title of host publicationICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728160443
DOIs
StatePublished - Nov 23 2020
Event27th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2020 - Glasgow, United Kingdom
Duration: Nov 23 2020Nov 25 2020

Publication series

NameICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings

Conference

Conference27th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2020
Country/TerritoryUnited Kingdom
CityGlasgow
Period11/23/2011/25/20

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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