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74LVQ573 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. 74LVQ573
Description  Low Voltage Octal Latch with 3-STATE Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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74LVQ573 Datasheet(HTML) 2 Page - Fairchild Semiconductor

   
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Truth Table
Inputs
Outputs
OE
LE
D
O
n
LH
H
H
LH
L
L
LL
X
O
0
HX
X
Z
H = HIGH Voltage
L = LOW Voltage
Z = High Impedance
X = Immaterial
O0 = Previous O0 before HIGH-to-LOW transition of Latch Enable
Functional Description
The LVQ573 contains eight D-type latches with 3-STATE
output buffers. When the Latch Enable (LE) input is HIGH,
data on the D
n inputs enters the latches. In this condition the
latches are transparent, i.e., a latch output will change state
each time its D-type input changes. When LE is LOW the
latches store the information that was present on the D-type
inputs a setup time preceding the HIGH-to-LOW transition of
LE. The 3-STATE buffers are controlled by the Output En-
able (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
DS011361-5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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