The 74HC373; 74HCT373 is an octal D-type transparent latch with
3-state outputs. The device features latch enable (LE) and output
enable (OE) inputs. When LE is HIGH, data at the inputs enter the
latches. In this condition the latches are transparent, a latch
output will change each time its corresponding D-input changes.
When LE is LOW the latches store the information that was present
at the inputs a set-up time preceding the HIGH-to-LOW transition of
LE. A HIGH on OE causes the outputs to assume a high-impedance
OFF-state. Operation of the OE input does not affect the state of
the latches. Inputs include clamp diodes. This enables the use of
current limiting resistors to interface inputs to voltages in
excess of VCC.
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