74368 2/4-bit 3-state inverting buffer/line driver. +----------+ +-----------+ /1OE |1 +--+ 16| VCC |/OE| A |/Y | 1A1 |2 15| /2OE |---+---+---| /1Y1 |3 14| 2A2 | 1 | X | Z | 1A2 |4 74 13| /2Y2 | 0 | 0 | 1 | /1Y2 |5 368 12| 2A1 | 0 | 1 | 0 | 1A3 |6 11| /2Y1 +-----------+ /1Y3 |7 10| 1A4 GND |8 9| /1Y4 +----------+ [This information is part of the GIICM]