74F373SC Fairchild Semiconductor, 74F373SC Datasheet - Page 2

• Manufacturer Part Number: 74F373SC
• Description: IC LATCH TRANSPARENT OCT 20-SOIC
• Manufacturer: Fairchild Semiconductor
• Series: 74Fr

Specifications of 74F373SC

• 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: 5.3ns
• Current - Output High, Low: 3mA, 24mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: 74F373SC.

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Unit Loading/Fan Out
Functional Description
The 74F373 contains eight D-type latches with 3-STATE
output buffers. When the Latch Enable (LE) input is HIGH,
data on the D
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 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.
Pin Names
D
LE
OE
O
n
0
0
–D
–O
inputs enters the latches. In this condition
7
7
Data Inputs
Latch Enable Input (Active HIGH)
Output Enable Input (Active LOW)
3-STATE Latch Outputs
Description
2
Truth Table
H
L
X
Z
LOW Voltage Level
High Impedance State
HIGH Voltage Level
Immaterial
LE
H
H
L
X
150/40 (33.3)
HIGH/LOW
1.0/1.0
1.0/1.0
1.0/1.0
U.L.
Inputs
OE
H
L
L
L
3 mA/24 mA (20 mA)
20 A/ 0.6 mA
Output I
20 A/ 0.6 mA
20 A/ 0.6 mA
D
H
L
X
X
n
Input I
IH
OH
/I
/I
IL
O
OL
n
(no change)
Output
O
H
Z
L
n