7410
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The 7410 (variants 74LS10, 74HC10) is a 74-series logic IC with three independent 3-Input NAND gates.
7410 Pinout
.--\/--. 1A -> |01 14| -- +5V 1B -> |02 13| <- 1C 2A -> |03 12| -> 1Y 2B -> |04 11| <- 3C 2C -> |05 10| <- 3B 2Y <- |06 09| <- 3A Gnd -- |07 08| -> 3Y `------'
Signal descriptions
Y is low if any of A, B or C is high, and is high if A, B and C are all low.