1.5 V full-swing BiCMOS dynamic logic circuits

This paper presents the design of BiCMOS dynamic logic circuits that are capable of full-swing operation from low supply voltages down to 1.5 V. Basic full-swing low-voltage BiCMOS cells are introduced. These include emitter-follower complementary n-type cell, quasi-complementary n-type cell and a p-type cell based on the transiently saturated full-swing technique. The propagation delay, power consumption and the full-swing capability of such cells have been studied both at the cell level and in a 4 b CLA design. The results clearly show the validity of the proposed circuits for high-speed low-voltage operation.