74AC573 데이터 시트보기 (PDF) - Motorola => Freescale
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74AC573 Datasheet PDF : 8 Pages
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MC74AC573 MC74ACT573
FUNCTIONAL DESCRIPTION
The MC74AC573/74ACT574 contains eight D-type latches
with 3-state output buffers. 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 buffers are controlled by the Output Enable
(OE) input. When OE is LOW, the buffers are enabled. When
OE is HIGH the buffers 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
Q
Q
Q
Q
Q
Q
Q
Q
LE
LE
LE
LE
LE
LE
LE
LE
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
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