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54LS173 View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS173 TRI-STATE 4-Bit D-Type Register National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS173 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
54LS
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
Recommended Operating Conditions
Symbol
Parameter
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IOH
High Level Output Current
IOL
Low Level Output Current
fCLK
Clock Frequency (Note 1)
Clock Frequency (Note 2)
tW
Pulse Width
(Note 3)
Clock
Clear
tSU
Setup Time
(Note 3)
Enable
Data
tH
Hold Time
(Note 3)
Enable
Data
tREL
Clear Release Time
TA
Free Air Operating Temperature
Note 1 CL e 45 pF RL e 667X TA e 25 C and VCC e 5V
Note 2 CL e 150 pF RL e 667X TA e 25 C and VCC e 5V
Note 3 TA e 25 C and VCC e 5V
54LS173
Min
Nom
Max
45
5
55
2
07
b1
12
30
20
17
17
15
0
5
10
b55
125
DM74LS173A
Min
Nom
Max
4 75
5
5 25
2
08
b2 6
24
0
30
0
20
17
17
23
15
0
0
10
0
70
Units
V
V
V
mA
mA
MHz
MHz
ns
ns
ns
ns
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
VI
VOH
VOL
II
IIH
IIL
IOZH
IOZL
IOS
ICC
Parameter
Input Clamp Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Current Max
Input Voltage
High Level Input Current
Low Level Input Current
Off-State Output Current with High
Level Output Voltage Applied
Off-State Output Current with Low
Level Output Voltage Applied
Short Circuit
Output Current
Supply Current
Conditions
VCC e Min II e b18 mA
VCC e Min IOH e Max
VIL e Max VIH e Min
VCC e Min IOL e Max
VIL e Max VIH e Min
IOL e 4 mA VCC e Min
VCC e Max VI e 7V
54LS
DM74
DM74
VCC e Max VI e 2 7V
VCC e Max VI e 0 4V
VCC e Max VO e 2 7V
VIH e Min VIL e Max
VCC e Max VO e 0 4V
VIH e Min VIL e Max
VCC e Max
(Note 5)
VCC e Max (Note 6)
54LS
DM74
Min
24
b20
b20
Typ
(Note 4)
0 35
0 25
17
Max
b1 5
04
05
04
01
20
b0 4
20
b20
b100
b100
30
Units
V
V
V
mA
mA
mA
mA
mA
mA
mA
2
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