74ABT373CMSA Fairchild Semiconductor, 74ABT373CMSA Datasheet - Page 2

• Manufacturer Part Number: 74ABT373CMSA
• Description: IC OCT TRANSP LATCH 3ST 20SSOP
• Manufacturer: Fairchild Semiconductor
• Series: 74ABTr

Specifications of 74ABT373CMSA

• 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: 2.7ns
• Current - Output High, Low: 32mA, 64mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

©1993 Fairchild Semiconductor Corporation
74ABT373 Rev. 1.4
Functional Description
The ABT373 contains eight D-type latches with 3-STATE
output buffers. When the Latch Enable (LE) input is
HIGH, data on the D
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 buffers are
controlled by the Output Enable (OE) input. When OE is
LOW, the buffers are in the bi-state mode. 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
Please note that this diagram is provided only for the understanding of logic operations and should not be used to
estimate propagation delays.
n
inputs enters the latches. In this
2
Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = HIGH Impedance State
LE
H
H
X
L
Inputs
OE
H
L
L
L
D
H
X
X
L
n
O
n
(no change)
Output
O
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H
Z
L
n