Non Return Mobile Logic Family

Many logic circuit applications of RTDs are based on the MOnostable-BIstable Logic Element (MOBILE). Cascaded MOBILE gates are operated in a pipelined fashion using a four phase overlapping clocking scheme. To improve the robustness of MOBILE networks, a simpler clock scheme is desirable. We have demonstrated that removing the return to a "precharge" voltage behaviour of conventional MOBILE gates, operation with a single phase clock scheme is possible. In this paper, a non return MOBILE logic family is described and its single phase operation shown. A comparison between return and non return gates is carried out showing that in addition to the simpler clock scheme required, speed and power-delay product improvements can be achieved with the proposed ones.