This growth is driven by the continual integration of complex analog and digital building blocks on a single chip, so silicon area and power consumption are the two most valued aspects of the design. In this dissertation, 2:1 multiplexer and 1:2 decoder is proposed. The advancement of CMOS technologies paved the road for a growing market of mobile and portable electronic devices. Design is also experimented under various... These dynamic circuits are often favored in high performance designs because of the speed advantage offered over static CMOS logic circuits. Wide fan-in logic such as domino circuits is used in high-performance applications. The proposed 2:1 multiplexer and 1:2 decoder design based on proposed high performance domino logic circuit are tested in 45nm and 65nm technologies to prove its technology independence. Dynamic domino logic circuits are widely used in modern digital VLSI circuits. Compared to static CMOS logic, dynamic logic offers good performance.