Układy CMOS i TTL

7442 – Dekoder kodu BCD na kod dziesiętny

1 Czas czytania (min)
    +---+--+---+             +---+---+---+---*---+---+---+---+
/Y0 |1  +--+ 16| VCC         | S3| S2| S1| S0|/Y0|/Y1|...|/Y9|
/Y1 |2       15| S0          +===+===+===+===*===+===+===+===+
/Y2 |3       14| S1          | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
/Y3 |4       13| S2          | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 |
/Y4 |5  7442 12| S3          | . | . | . | . | 1 | 1 | . | 1 |
/Y5 |6       11| /Y9         | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 |
/Y6 |7       10| /Y8         | 1 | 0 | 1 | X | 1 | 1 | 1 | 1 |
GND |8        9| /Y7         | 1 | 1 | X | X | 1 | 1 | 1 | 1 |
    +----------+             +---+---+---+---*---+---+---+---+