7408
From NESdev Wiki
Jump to navigationJump to search
The 7408 (variants 74LS08, 74HC08) is a 74-series logic IC with four independent 2-input AND gates.
7408 Pinout
.--\/--. 1A -> |01 14| -- +5V 1B -> |02 13| <- 4A 1Y <- |03 12| <- 4B 2A -> |04 11| -> 4Y 2B -> |05 10| <- 3A 2Y <- |06 09| <- 3B Gnd -- |07 08| -> 3Y `------'
Signal descriptions
Y is high if both A and B are high. Y is low if at least one of A and B is low.