Patent ID: 6014074
Filing Date: 2000-01-11
Classification: G06F

Abstract:
A binary comparator for comparing first and second binary digits, comprising:first and second resistance units each having one side respectively coupled to first and second reference voltages;a plurality of comparators connected serially between the other side of the first resistance unit and a third reference voltage, wherein the plurality of comparators is equal in number to a number of bits of the first and second binary digits;a first inverter coupled to the other side of the first resistance unit and an output of a first comparator of the plurality of comparators that inputs the least significant bits of the first and second binary digits, respectively, and wherein the first inverter outputs a first output signal;a plurality of switching transistors each connected respectively between the other side of the second resistance unit and an input node of a corresponding one of the plurality of comparators, wherein the transistors are switched by control signals that result from a logical combination of the corresponding bit pairs of the first binary digit and the second binary digit; anda second inverter coupled to the other side of the second resistance unit, wherein the second inverter outputs a second output signal.