varicap threshold logic
In this paper, a highly compact novel Threshold Logic (TL) Gate approach called "Varicap TL (VcTL)" is proposed and described. The novel feature of the design is in using variable MOSFET capacitances which reduces the area. The electrical analysis of this variable MOSFET capacitance is presented and its variability is explained. Varicap TL (VcTL) gate is created by using a latch type decision circuit topology. Parallel counter implementations of (7,3) in 0.13m and 0.18m technology are realized by using proposed Varicap TL based on Minnick TL Network. Comparison of these implementations with Boolean Logic (BL) based dynamic (7,3) counter is shown. VcTL approach in 0.13m offers 41\% smaller area which is a significant result of the approach and 27\% higher speed and only 24\% higher power consumption compared to BL realization in 0.13m technology. The results also show VcTL's scalability. As VcTL is scaled from 0.18m to 0.13m, the speed is increased by 21\%, the area is decreased by 33\% and power by 37\%.
threshold logic parallel counter minnick tl network variable capacitance