#74LS75

Description: 4-bit Latch

Datasheet: http://www.ti.com/lit/gpn/sn74LS75

Pinout:

      +-----------+
~{Q0} |[ 1]   [16]| Q0
   D0 |[ 2]   [15]| Q1
   D1 |[ 3]   [14]| ~{Q1}
  E23 |[ 4]   [13]| E01
  VCC |[ 5]   [12]| GND
   D2 |[ 6]   [11]| ~{Q2}
   D3 |[ 7]   [10]| Q2
~{Q3} |[ 8]    [9]| Q3
      +-----------+