MC74AC373 Datasheet, PDF (2/8 Pages) Motorola, Inc – OCTAL TRANSPARENT LATCH WITH 3-STATE OUTPUTS

MC74AC373 MC74ACT373
FUNCTIONAL DESCRIPTION
The MC74AC373/74ACT373 contains eight D-type latches
with 3-state standard outputs. When the Latch Enable (LE)
input is HIGH, data on the Dn inputs enters the latches. In this
condition the latches are transparent, i.e., a latch output will
change state each time its D input changes. When LE is LOW,
the latches store the information that was present on the D
inputs a setup time preceding the HIGH-to-LOW transition of
LE. The 3-state standard outputs are controlled by the Output
Enable (OE) input. When OE is LOW, the standard outputs are
in the 2-state mode. When OE is HIGH, the standard outputs
are in the high impedance mode but this does not interfere with
entering new data into the latches.
LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
D
D
D
D
D
D
D
D
O
O
O
O
O
O
O
O
G
G
G
G
G
G
G
G
LE
OE
O0
O1
O2
O3
O4
O5
O6
O7
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
FACT DATA
5-2