A Technique for Logic Design of Voltage-Mode Pass Transistor Based Multi-Valued Multiple-Output Logic Circuits

摘要

An approach for designing multi-valued logic circuits is proposed in this paper. We also describe a systematic method for implementing a set of binary logic functions, as multi-valued logic functions, and the heuristic algorithms for different stages of the design process are provided along with it. Experimental results are included for a number of benchmark functions and the proposed method has been found to be quite efficient, in terms of number of transistors, in the implementation of some of these functions. The proposed circuits are essentially voltage-mode circuits with multi-valued outputs and in the case of implementing multiple-output binary logic functions this approach produces circuits with reduced number of output pins. The circuits described here are also suitable to be implemented in VLSI technology since they are composed of simple enhancement / depletion mode MOS transistors and pass transistors.