This 8-bit latch features 3-state outputs designed specifically for driving highly
capacitive or relatively low-impedance loads. It is particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and working registers.
The eight latches of the SN54HC373-DIE are transparent D-type latches. While the
latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low,
the Q outputs are latched at the levels that were set up at the D inputs.