#74LS241

Description: Octal Buffer and Line Driver With 3-State Output, complementary enables, non-inverting outputs

Datasheet: http://www.ti.com/lit/ds/symlink/sn74ls241.pdf

Pinout:

    +-----------+
OEA |[ 1]   [20]| VCC
I0A |[ 2]   [19]| OEB
O3B |[ 3]   [18]| O0A
I1A |[ 4]   [17]| I3B
O2B |[ 5]   [16]| O1A
I2A |[ 6]   [15]| I2B
O1B |[ 7]   [14]| O2A
I3A |[ 8]   [13]| I1B
O0B |[ 9]   [12]| O3A
GND |[10]   [11]| I0B
    +-----------+