International Journal of Electrical and Computer Engineering (IJECE) Vol. 11, No. 3, June 2021, pp. 2003~2010 ISSN: 2088-8708, DOI: 10.11591/ijece.v11i3.pp2003-2010  2003 Journal homepage: http://ijece.iaescore.com Hybrid memristor-CMOS implementation of logic gates design using LTSpice Wan Mohd Hashimi Wan Mohamad Sharif, Mohd Faizul Md Idros, Syed Abdul Mutalib Al-Junid, Fairul Nazmi Osman, Abdul Hadi Abdul Razak, Abdul Karimi Halim, Muhammad Adib Harun Electronic Architecture and Application Research Group (EArA), Faculty of Electrical Engineering, Universiti Teknologi MARA, Malaysia Article Info ABSTRACT Article history: Received Apr 14, 2020 Revised Dec 15, 2020 Accepted Dec 26, 2020 In this paper, a hybrid memristor-CMOS implementation of logic gates simulated using LTSpice. Memristors' implementation in computer architecture designs explored in various design structures proposed by researchers from all around the world. However, all prior designs have some drawbacks in terms of applicability, scalability, and performance. In this research, logic gates design based on the hybrid memristor-CMOS structure presented. 2-inputs AND, OR, NAND, NOR, XOR, and XNOR are demonstrated with minimum components requirements. In addition, a 1-bit full adder circuit with high performance and low area consumption is also proposed. The proposed full adder only consists of 4 memristors and 7 CMOS transistors. Half design of the adder base on the memristor component created. Through analysis and simulations, the memristor implementation on designing logic gates using memristor-CMOS structure demonstrated using the generalized metastable switch memristor (MSS) model and LTSpice. In conclusion, the proposed approach improves speed and require less area. Keywords: CMOS Half adder Logic gate LTSpice Memristor This is an open access article under the CC BY-SA license. Corresponding Author: Mohd Faizul bin Md Idros Electronic Architecture and Application Research Group (EArA) Faculty of Electrical Engineering Universiti Teknologi MARA, Malaysia Email: faizul_san287@uitm.edu.my 1. INTRODUCTION Memristors have made a huge breakthrough in computer architecture designs because of its non- volatility behavior. A lot of researches had reported their outcome even though is not commercially available [1-4]. Much evidence proved that using analog-based circuit operation will results in much faster data processing compared to current digital-based operation. It can remember its past value even when the power supply disconnected or turned off. Its resistance depends on the history of the applied inputs: Voltage or current. Moreover, it is predicted that memristors will be the key to designing analog-based data processing as shown in (1) and (2). (1) (2)