4009
Hex inverters with level shifted outputs.
VDD may not be lower than VCC.

    +----------+             +-------+               _
VCC |1  +--+ 16| VDD         | A |/Y |          /Y = A
/Y1 |2       15| /Y6         |---+---|
 A1 |3       14| A6          | 0 | 1 |
/Y2 |4       13|             | 1 | 0 |
 A2 |5  4009 12| /Y5         +-------+
/Y3 |6       11| A5
 A3 |7       10| /Y4
GND |8        9| A4
    +----------+