74756 Dual 4-bit open-collector inverting buffer/line driver. +----------+ /1OE |1 +--+ 20| VCC 1A1 |2 19| /2OE /2Y4 |3 18| /1Y1 1A2 |4 17| 2A4 /2Y3 |5 74 16| /1Y2 1A3 |6 756 15| 2A3 /2Y2 |7 14| /1Y3 1A4 |8 13| 2A2 /2Y1 |9 12| /1Y4 GND |10 11| 2A1 +----------+ [This information is part of the GIICM]