74ACT573SCX Fairchild Semiconductor, 74ACT573SCX Datasheet - Page 2

• Manufacturer Part Number: 74ACT573SCX
• Description: IC LATCH OCTAL HS 3STATE 20-SOIC
• Manufacturer: Fairchild Semiconductor
• Series: 74ACTr

Specifications of 74ACT573SCX

• Logic Type: D-Type Transparent Latch
• Circuit: 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.5 V ~ 5.5 V
• Independent Circuits: 1
• Delay Time - Propagation: 6ns
• Current - Output High, Low: 24mA, 24mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Dc: 0136
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74ACT573SCX; 74ACT573SCXTR

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Functional Description
The 74AC573 and 74ACT573 contain eight D-type latches
with 3-STATE output buffers. When the Latch Enable (LE)
input is HIGH, data on the D
this condition the latches are transparent, i.e., a latch out-
put will change state each time its D-type input changes.
When LE is LOW the latches store the information that was
Truth Table
H
L
Z
X
O
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
0
LOW Voltage
High Impedance
HIGH Voltage
Immaterial
Previous O
0
before HIGH-to-LOW transition of Latch Enable
n
inputs enters the latches. In
OE
H
L
L
L
Inputs
LE
H
H
X
L
2
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 Enable (OE) input. When OE is
LOW, the buffers are enabled. When OE is HIGH the buff-
ers are in the high impedance mode but this does not inter-
fere with entering new data into the latches.
D
H
X
X
L
Outputs
O
O
H
L
Z
n
0