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.
== 74161 Pinout ==
== 7402 Pinout ==
<pre>
<pre>
       .--\/--.
       .--\/--.
  Y1 --|01  14|-- +5V
  1Y --|01  14|-- +5V
  A1 --|02  13|-- Y4
  1A --|02  13|-- 4Y
  B1 --|03  12|-- B4
  1B --|03  12|-- 4B
  Y2 --|04  11|-- A4
  2Y --|04  11|-- 4A
  A2 --|05  10|-- Y3
  2A --|05  10|-- 3Y
  B2 --|06  09|-- B3
  2B --|06  09|-- 3B
Gnd --|07  08|-- A3
Gnd --|07  08|-- 3A
       `------'</pre>
       `------'</pre>



Revision as of 03:55, 10 May 2011

The 7402 (variants 74LS02, 74HC02) is a 74-series logic IC with four independent 2-Input NOR gates.

7402 Pinout

      .--\/--.
 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

Y is low if either A or B is high, and is high if A and B are both low.