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74ACQ373SC Datasheet(Fiches technique) 2 Page - Fairchild Semiconductor

Numéro de pièce 74ACQ373SC
Description  Quiet Series™ Octal Transparent Latch with 3-STATE Outputs
Télécharger  13 Pages
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74ACQ373SC Datasheet(HTML) 2 Page - Fairchild Semiconductor

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©1989 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74ACQ373, 74ACTQ373 Rev. 1.3
2
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
H
= HIGH Voltage Level
L
= LOW Voltage Level
Z
= High Impedance
X
= Immaterial
O0 = Previous O0 before HIGH-to-LOW transition of
Latch Enable
Inputs
Outputs
LE
OE
Dn
On
X
H
X
Z
H
L
L
L
H
L
H
H
L
L
X
O0


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