74F573SC Fairchild Semiconductor, 74F573SC Datasheet - Page 2
![IC LATCH OCTAL D-TYPE 20-SOIC](/photos/7/18/71839/74f573sc_sml.jpg)
74F573SC
Manufacturer Part Number
74F573SC
Description
IC LATCH OCTAL D-TYPE 20-SOIC
Manufacturer
Fairchild Semiconductor
Series
74Fr
Datasheet
1.74F573PC.pdf
(7 pages)
Specifications of 74F573SC
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
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
74F573SCX
Manufacturer:
SHARP
Quantity:
10 387
www.fairchildsemi.com
Unit Loading/Fan Out
Functional Description
The 74F573 contains eight D-type latches with 3-state out-
put 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.
D
LE
OE
O
Pin Names
0
0
–D
–O
7
7
n
inputs enters the latches. In this condition
Data Inputs
Latch Enable Input (Active HIGH)
3-STATE Output Enable Input (Active LOW)
3-STATE Latch Outputs
Description
2
Function Table
H
L
X
O
0
LOW Voltage Level
HIGH Voltage Level
Immaterial
Value stored from previous clock cycle
150/40(33.3)
OE
HIGH/LOW
H
L
L
L
1.0/1.0
1.0/1.0
1.0/1.0
U.L.
Inputs
LE
H
H
X
L
3 mA/24 mA (20 mA)
Output I
20 A/ 0.6 mA
20 A/ 0.6 mA
20 A/ 0.6 mA
Input I
D
H
L
X
X
IH
OH
/I
Outputs
/I
IL
OL
O
O
H
L
Z
0