74VHCT573AMTC Fairchild Semiconductor, 74VHCT573AMTC Datasheet - Page 2

• Manufacturer Part Number: 74VHCT573AMTC
• Description: IC LATCH OCTAL D 3STATE 20TSSOP
• Manufacturer: Fairchild Semiconductor
• Series: 74VHCTr

Specifications of 74VHCT573AMTC

• 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: 5.1ns
• Current - Output High, Low: 8mA, 8mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

©1997 Fairchild Semiconductor Corporation
74VHCT573A Rev. 1.3
Logic Symbol
Truth Table
H
L
X
Z
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.
LOW Voltage Level
High Impedance
Immaterial
HIGH Voltage Level
OE
H
L
L
L
Inputs
LE
H
H
X
L
IEEE/IEC
D
H
X
X
L
Outputs
O
O
H
Z
L
n
0
2
Functional Description
The VHCT573A contains eight D-type latches with
3-STATE output buffers. When the Latch Enable (LE)
input is HIGH, data on the D
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.
n
inputs enters the latches.
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