74hc series logic texas instruments sn74hc10n this 74hc10n triple 3 input positive nand gate ic is a part of the 74hc range and comes in a dil 14 package the device contains three independent 3 input nand gates that perform the boolean function y a middot b middot c or y a b c in positive logic texas instruments sn74hc10n triple 3 input nand gate pdip14