Piecewise linear macromodels for elementary logic and fuzzy circuits

Based on a vector sorting method using piecewise linear (PWL) techniques, a piecewise linear representation for elementary logic and fuzzy circuits is derived. A modeling technique and a PWL representation for elementary logic gates (AND/NAND/OR/NOR) and fuzzy circuits (min(x), max(x)) are presented. It is shown that the authors´ models, which are simple in nature, accurately describe the DC transfer characteristics of the emitter-coupled logic (ECL) logic circuits.