A suggestion for low-power current-sensing complementary pass-transistor logic interconnection

In this paper, a new circuit interconnection scheme of the low-power current-sensing complementary pass-transistor logic (LCSCPTL) is proposed and analyzed. The proposed new circuit scheme using full-swing and non-full-swing output signals to control the NMOS pass transistor logic tree network. Due to the non-full-swing outputs and the current-sensing scheme, the new logic circuit scheme can improve the power dissipation and operation speed. The non-full-swing LCSCPTL is applied to the design of the parallel multiplier. 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 8/spl times/8-bit parallel multiplier can be fabricated without changing the conventional 5 V CMOS process. The operation speed of the parallel multiplier is 32 ns for 1.2 V supply voltage.