Conventional Cmos Technology : Science And Nano Electronics

907 WordsMay 29, 20164 Pages
Conventional CMOS technology comes up with a lot of margins while scaling into a nano-level. So, to overcome this, several substitute technologies have been proposed as a solution. Quantum Dot Cellular Automata (QCA) technology is one such upcoming nano-technology that can be a perfect substitute of Complementary Metal Oxide Semiconductor (CMOS) due to its high speed and low power procedure in the field of nano-science and nano-electronics. Thus, QCA overcomes the drawbacks of CMOS technology and has a substantial relevance in the field quantum computation. In this paper, we give a review result of QCA in terms or hazards using digital multiplexer circuit as the base. Literary survey lacks in hazard free design. Hazards in a system are undesirable effect which creates uncertain outputs and can be avoided. This paper considers hazard in smallest ever 2:1 multiplexer. Static hazard has been looked into for both digital and QCA circuit. For both the circuits, hazard has been eliminated and given a comparative study in terms of delay and better one has been proposed. Design has been verified using simulation from QCA designer tool. Keywords—Quantum dot Cellular Automata (QCA); Multiplexer; QCADesigner; Static Hazard; Delay; Hazard Elimination I. INTRODUCTION CMOS technology is very near to its scaling limit. Using the VLSI technology, in the recent past, researchers are facing some limitations, from practical point of view, in the approaches of CMOS technology like the short

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