Design of 2-3 mixed-valued/six-valued adiabatic asynchronous up-down counter

Through the study of mixed-valued coding theory, the working principle of adiabatic circuits and up-down counters, a new design of 2-3 mixed-valued/six-valued adiabatic asynchronous up-down counter is proposed. Firstly, the functional expressions of 2-3 mixed-valued/six-valued adiabatic shift right gate and carry/borrow circuit are derived by using the theory of three essential circuit elements, then MOS transistors with different thresholds are adopted to achieve the corresponding structures, and 2-3 mixed-valued/six-valued adiabatic asynchronous up-down counter is further designed on this basis. Finally, HSPICE simulation results verifies correct logic function of the designed circuits, compared with 2-3 mixed-valued /six-valued asynchronous up-down counter, power consumption of the circuits saves up to 94%.