LOW POWER BARREL SHIFTER DESIGN USING COMPLEMENTARY AND PSEUDO NMOS LOGIC

The purpose of the paper is to design the barrel shifter using complementary logic and pseudo dynamic logic. The barrel shifter is essential segment in ALU. The 2.1mux design using static cmos or pseudo nmos logic is used for the shifting operation in left direction or in right direction. The design of barrel shifter and simulations are done on CADENCE Virtuoso 6.1 tool. The methodology in this work are (1) CMOS static logic (2) Pseudo NMOS logic. This work evaluates on 180nm technology. It is design to reduce area, delay and power of barrel shifter in ALU. At the end, both the logic structures are analyzed and optimize area logic is purposed.