#74LS298

Description: Quad 2 to 1 multiplexer with storage

Datasheet: http://www.ti.com/lit/gpn/sn74LS298

Pinout:

    +-----------+
I1B |[ 1]   [16]| VCC
I1A |[ 2]   [15]| QA
I0A |[ 3]   [14]| QB
I0B |[ 4]   [13]| QC
I1C |[ 5]   [12]| QD
I1D |[ 6]   [11]| CP
I0D |[ 7]   [10]| S
GND |[ 8]    [9]| I0C
    +-----------+