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}}
  1Y --|01  14|-- +5V
  1A --|02  13|-- 4Y
  1B --|03  12|-- 4B
  2Y --|04  11|-- 4A
  2A --|05  10|-- 3Y
  2B --|06  09|-- 3B
Gnd --|07  08|-- 3A
      `------'


== 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.