High speed and leakage-tolerant domino circuits for high fan-in applications in 70nm CMOS technology

This paper presents two proposed circuits that employ a footer transistor that is initially OFF in the evaluation phase to reduce leakage and then turned ON to complete the evaluation. Also a new circuit is added using a NAND gate that improves the performance more than 10%-15% compared with latter proposed circuit. According to simulations in a predictive 70nm process, the proposed circuit increases noise immunity by more than 26X for wide OR gates and shows performance improvement of up to 20% compared to conventional domino logic circuits. The proposed circuit reduces the contention between keeper transistor and NMOS evaluation transistors at the beginning of evaluation phase. High fan-in comparators and multiplexers demonstrate high noise immunity compared with previous proposed works.