A 1.2 V CMOS multiplier using low-power current-sensing complementary pass-transistor logic

Abstract

This work describes a CMOS 8*8-bit parallel multiplier for 1.2 V supply voltage. The low-power current-sensing complementary pass-transistor logic (LCSCPTL) is applied to the design of the parallel multiplier. The LCSCPTL have certain advantages in both speed and power dissipation over the CPL circuit. The 4-2 compressors and the conditional carry selection scheme are used in this design to achieve regular layout and improve the operation speed. Moreover, the 1.2 V low-voltage 8*8-bit parallel multiplier can be designed and fabricated without changing the conventional 5 V 0.8 m CMOS process. Based upon the HSPICE simulation results, the operation speed of the parallel multiplier is 54 ns for 1.2 V supply voltage.