Threshold I/sup 2/L and its applications to binary symmetric functions and multivalued logic

I/SUP 2/L threshold gate using current mirrors providing weighting of inputs, summation, and comparison with a threshold is described and its practical realization is discussed. Application to binary symmetric functions shows significant area savings over standard I/SUP 2/L implementation. A complete multivalued logic family, using a four-level I/SUP 2/L threshold logic technique is introduced.