7411004
Hex inverters with buffered output.

    +----------+             +-------+               _
/1Y |1  +--+ 20| 1A          | A |/Y |          /Y = A
/2Y |2       19| 2A          |---+---|
/3Y |3       18| 3A          | 0 | 1 |
GND |4       17|             | 1 | 0 |
GND |5  7411 16| VCC         +-------+
GND |6   004 15| VCC
GND |7       14|
/4Y |8       13| 4A
/5Y |9       12| 5A
/6Y |10      11| 6A
    +----------+

[This information is part of the GIICM]