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74ACQ373 View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
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74ACQ373 Datasheet PDF : 13 Pages
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Logic Symbol
IEEE/IEC
Functional Description
The ACQ/ACTQ373 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 at 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 inter-
fere with entering new data into the latches.
Truth Table
Inputs
Outputs
LE
OE
Dn
On
X
H
X
Z
H
L
L
L
H
L
H
H
L
L
X
O0
H = HIGH Voltage Level
L = LOW Voltage Level
Z = High Impedance
X = Immaterial
O0 = Previous O0 before HIGH-to-LOW transition of
Latch Enable
©1989 Fairchild Semiconductor Corporation
74ACQ373, 74ACTQ373 Rev. 1.3
2
www.fairchildsemi.com
 

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