Układy CMOS i TTL

4002 – Dwukrotne, 4 wejściowe bramki NOR

1 Czas czytania (min)
    +---+--+---+             +---+---+---+---*---+       _________
/1Y |1  +--+ 14| VCC         | A | B | C | D |/Y |  /Y = (A+B+C+D)
 1A |2       13| /2Y         +===+===+===+===*===+
 1B |3       12| 2D          | 0 | 0 | 0 | 0 | 1 |
 1C |4  4002 11| 2C          | 0 | 0 | 0 | 1 | 0 |
 1D |5       10| 2B          | 0 | 0 | 1 | X | 0 |
    |6        9| 2A          | 0 | 1 | X | X | 0 |
GND |7        8|             | 1 | X | X | X | 0 |
    +----------+             +---+---+---+---*---+