Self-checking multiple-valued circuit based on dual-rail current-mode differential logic

A multiple-valued current-mode (MVCM) circuit based on dual-rail differential logic has been proposed for highspeed arithmetic systems at a low supply voltage. This paper presents a new totally self-checking circuit based on dual-rail MVCM logic, where almost all the basic components except a differential-pair circuit have been already duplicated, which results in small hardware overhead compared with a non-self-checking circuit based on dual-rail MVCM logic. Moreover the performance of the proposed self-checking circuit is superior to that of full duplication of the non-self-checking circuit based on dual-rail MVCM logic in terms of transistor counts, switching delay and dynamic power dissipation under a 0.5-mu m standard CMOS technology.