74285 4-bit binary multiplier with open-collector outputs. +----------+ 2C |1 +--+ 16| VCC 2B |2 15| 2D 2A |3 14| /GA 1D |4 74 13| /GB 1A |5 285 12| Y0 1B |6 11| Y1 1C |7 10| Y2 GND |8 9| Y3 +----------+ [This information is part of the GIICM]