4016, 4066, 744016, 744066 Quad analog switches. +----------+ 1X |1 +--+ 14| VCC 1Y |2 13| 1EN 2Y |3 12| 4EN 2X |4 4016 11| 4X 2EN |5 4066 10| 4Y 3EN |6 9| 3Y GND |7 8| 3X +----------+ [This information is part of the GIICM]