7402: Difference between revisions
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The '''7402''' (variants 74LS02, 74HC02) is a 74-series logic IC with four independent 2-Input NOR gates. | The '''7402''' (variants 74LS02, 74HC02) is a 74-series logic IC with four independent 2-Input NOR gates. | ||
== 7402 Pinout == | == 7402 Pinout == | ||
{{Pinout74xxQuad14pin}} | |||
== Signal descriptions == | == Signal descriptions == | ||
Revision as of 03:56, 7 March 2014
The 7402 (variants 74LS02, 74HC02) is a 74-series logic IC with four independent 2-Input NOR gates.
7402 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 low if either A or B is high, and is high if A and B are both low.
