#74LS541

Description: 8-bit Buffer/Line Driver 3-state outputs

Datasheet: http://www.ti.com/lit/gpn/sn74LS541

Pinout:

    +-----------+
 G1 |[ 1]   [20]| VCC
 A0 |[ 2]   [19]| G2
 A1 |[ 3]   [18]| Y0
 A2 |[ 4]   [17]| Y1
 A3 |[ 5]   [16]| Y2
 A4 |[ 6]   [15]| Y3
 A5 |[ 7]   [14]| Y4
 A6 |[ 8]   [13]| Y5
 A7 |[ 9]   [12]| Y6
GND |[10]   [11]| Y7
    +-----------+