#74LS137

Description: Decoder 3 to 8, address latches

Datasheet: http://www.ti.com/lit/gpn/sn74LS137

Pinout:

      +-----------+
   A0 |[ 1]   [16]| VCC
   A1 |[ 2]   [15]| Y0
   A2 |[ 3]   [14]| Y1
~{GL} |[ 4]   [13]| Y2
~{G2} |[ 5]   [12]| Y3
   G1 |[ 6]   [11]| Y4
   Y7 |[ 7]   [10]| Y5
  GND |[ 8]    [9]| Y6
      +-----------+