74209 Dual 3-state 1-line to 4-line noninverting clock driver. +----------+ 1Y2 |1 +--+ 20| 1Y1 1Y3 |2 19| 1A 1Y4 |3 18| /1OE1 GND |4 17| /1OE2 GND |5 74 16| VCC GND |6 209 15| VCC GND |7 14| 2A 2Y1 |8 13| /2OE1 2Y2 |9 12| /2OE2 2Y3 |10 11| 2Y4 +----------+ [This information is part of the GIICM]