Mos analog nor amplifier

Abstract From the Canadian patent

A MOS (preferably CMOS type) analog NOR amplifier suitable for use in building a programmable array logic (PAL) or the like or for other, usuages. The analog NOR amplifier consists of a reference MOS transistor and first pull-up means at one branch and a plurality of input MOS transistors and second pull-up means at another branch with a constant current source connected to the sourct terminals of these MOS transistors which forms a configruation, similar to a differential amplifier. With the gate terminals of the plurality ofinput MOS transistors as logic input ends the drain terminals of the same will act as the output end of a standard NOR gate and the drain terminal of the referenceMOS …