Design and Optimization of an Cost-Efficient 2-to-4 Decoder with an Enable line using Quantum-dot Cellular Automata (QCA) Technology

A new nanotechnology called Quantum-dot Cellular Automata (QCA) promises to address CMOS technology's shortcomings. This approach enables electronic devices to operate at less die area, and lower power dissipation while maintaining a high rate of operating speed. This research demonstrates the efficiency of a 2-to-4 decoder circuit with an enabled line in QCA, created using three-input majority voters. An optimized design results in significantly fewer total cell counts, less area, and decreased QCA cost. The proposed 2-to-4 decoder circuit is more reliable and cost-efficient because the circuit design uses coplanar layers. Coplanar layer refers to designing QCA circuits utilizing a single layer. According to the results, the proposed 2-to-4 decoder circuit is better in all terms of performance compared to the most recent available design with an enable (EN) line. The proposed circuit required 166 total cell counts, 0.16μm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> total area, and 1.25 clock cycle delay (Latency). The new arrangement of cells with the least delay resulted in a decrease in both the overall area of circuits and the number of cells.