#74HC4051

Description: 8-channel analog multiplexer/demultiplexer, DIP-16/SOIC-16/TSSOP-16

Datasheet: http://www.ti.com/lit/ds/symlink/cd74hc4051.pdf

Pinout:

     +-----------+
  A4 |[ 1]   [16]| VCC
  A6 |[ 2]   [15]| A2
   A |[ 3]   [14]| A1
  A7 |[ 4]   [13]| A0
  A5 |[ 5]   [12]| A3
~{E} |[ 6]   [11]| S0
 VEE |[ 7]   [10]| S1
 GND |[ 8]    [9]| S2
     +-----------+