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http://dx.doi.org/10.7471/ikeee.2019.23.3.878

Design of an Energy Efficient XOR-XNOR Circuit  

Kim, Jeong Beom (Dept. of Electronics Engineering, Kangwon National University)
Publication Information
Journal of IKEEE / v.23, no.3, 2019 , pp. 878-882 More about this Journal
Abstract
XOR(exclusive-OR)-XNOR(exclusive NOR) circuit is a basic component of 4-2 compressor for high performance arithmetic operation. In this paper we propose an energy efficient XOR-XNOR circuit. The proposed circuit is reduced the internal parasitic capacitance in critical path and implemented with 8 transistors. The circuit produces a perfect output signals for all input combinations. Compared with the previous circuits, the proposed circuit has a 14.5% reduction in propagation delay time and a 1.7% increase in power consumption. Therefore, the proposed XOR-XNOR is reduced power-delay- product (PDP) by 13.1% and energy-delay-product (EDP) by 26.0%. The proposed circuits are implemented with standard CMOS 0.18um technology and verified through SPICE simulation with 1.8V supply voltage.
Keywords
XOR-XNOR; 4-2 compressor; energy ef icient circuit; PDP; EDP;
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