4067, 744067 16-to-1 line analog multiplexer/demultiplexer. +--------------+ Y |1 +--+ 24| VCC X7 |2 23| X8 X6 |3 22| X9 X5 |4 21| X10 X4 |5 20| X11 X3 |6 19| X12 X2 |7 4067 18| X13 X1 |8 17| X14 X0 |9 16| X15 S0 |10 15| /EN S1 |11 14| S2 GND |12 13| S3 +--------------+ [This information is part of the GIICM]