40109
Quad 3-state noninverting buffer/level shifter.
VDD supplies the output stage, VCC the input stage.

    +----------+             +-------------+
VCC |1  +--+ 16| VDD         | A | OE|  Y  |
1OE |2       15| 4OE         |---+---+-----|
 1A |3       14| 4A          | X | 0 |  Z  |
 1Y |4       13| 4Y          | 0 | 1 | GND |
 2Y |5 40109 12|             | 1 | 1 | VDD |
 2A |6       11| 3Y          +-------------+
2OE |7       10| 3A
GND |8        9| 3OE
    +----------+

[This information is part of the GIICM]