74573
8-bit 3-state transparent latch.

    +----------+             +---------------+
/OE |1  +--+ 20| VCC         |/OE| LE| D | Q |
 D1 |2       19| Q1          |---+---+---+---|
 D2 |3       18| Q2          | H | X | X | Z |
 D3 |4       17| Q3          | L | L | X | - |
 D4 |5   74  16| Q4          | L | H | L | L |
 D5 |6  573  15| Q5          | L | H | H | H |
 D6 |7       14| Q6          +---------------+
 D7 |8       13| Q7
 D8 |9       12| Q8
GND |10      11| LE
    +----------+