Abstract: In day to day life the demand of portable electronic devices is increasing. These portable devices must work on low power and high speed. Low power VLSI circuits are the critical components to implement these portable devices. Speed is the major factor of these devices but there is always a trade-off between speed and power. DTMOS technology offers high speed but at the same time it consumes more power than CMOS. DTMOS also shows better results at low voltages. In this paper 1-bit and higher bits 14-T full adder circuits are implemented using DTMOS technology and compared with CMOS technology. From the results it can be concluded that DTMOS adder shows higher speed than CMOS.

Keywords: 14-transistor Full Adder, DTMOS, High speed, CMOS, Low Power.