IC TTL 74xx

7400

Gerbang NAND 2-Inputan:

+---+--+---+             +---+---*---+           __
 1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
 1B |2       13| 4B          +===+===*===+
/1Y |3       12| 4A          | 0 | 0 | 1 |
 2A |4  7400 11| /4Y         | 0 | 1 | 1 |
 2B |5       10| 3B          | 1 | 0 | 1 |
/2Y |6        9| 3A          | 1 | 1 | 0 |
GND |7        8| /3Y         +---+---*---+
    +----------+

Positive Logic

__
 Y = AB

7402

Gerbang NOR 2-Inputan,.

+---+--+---+             +---+---*---+           ___
/1Y |1  +--+ 14| VCC         | A | B |/Y |      /Y = A+B
 1A |2       13| /4Y         +===+===*===+
 1B |3       12| 4B          | 0 | 0 | 1 |
/2Y |4  7402 11| 4A          | 0 | 1 | 0 |
 2A |5       10| /3Y         | 1 | 0 | 0 |
 2B |6        9| 3B          | 1 | 1 | 0 |
GND |7        8| 3A          +---+---*---+
    +----------+

7404

Gerbang NOT (Inverter)

+---+--+---+             +---*---+               _
 1A |1  +--+ 14| VCC         | A |/Y |          /Y = A
/1Y |2       13| 6A          +===*===+
 2A |3       12| /6Y         | 0 | 1 |
/2Y |4  7404 11| 5A          | 1 | 0 |
 3A |5       10| /5Y         +---*---+
/3Y |6        9| 4A
GND |7        8| /4Y
    +----------+

Positive Logic

_
 Y = A

7408

Gerbang AND 2-Inputan,

+---+--+---+             +---+---*---+
 1A |1  +--+ 14| VCC         | A | B | Y |       Y = AB
 1B |2       13| 4B          +===+===*===+
 1Y |3       12| 4A          | 0 | 0 | 0 |
 2A |4  7408 11| 4Y          | 0 | 1 | 0 |
 2B |5       10| 3B          | 1 | 0 | 0 |
 2Y |6        9| 3A          | 1 | 1 | 1 |
GND |7        8| 3Y          +---+---*---+
    +----------+

Positive Logic

 Y = AB

+----------+

7410

Gerbang NAND 3-Inputan,

+---+--+---+             +---+---+---*---+       ___
 1A |1  +--+ 14| VCC         | A | B | C |/Y |  /Y = ABC
 1B |2       13| 1C          +===+===+===*===+
 2A |3       12| /1Y         | 0 | X | X | 1 |
 2B |4  7410 11| 3C          | 1 | 0 | X | 1 |
 2C |5       10| 3B          | 1 | 1 | 0 | 1 |
/2Y |6        9| 3A          | 1 | 1 | 1 | 0 |
GND |7        8| /3Y         +---+---+---*---+
    +----------+

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