The SN74LS182N is a 16-pin dual 4-bit magnitude comparator logic IC from Texas Instruments. Features: Low power consumption High speed operation TTL compatible inputs Outputs source/sink up to 20mA Outputs can be wired ORed Open collector outputs Inputs and outputs on opposite sides of the package 16-pin DIP Package
SN74HC02N ,SN7402 Quad 2-input NOR Gate 





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