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54LS244FMQB Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. 54LS244FMQB
Description  Octal TRI-STATEE Buffers/Line Drivers/Line Receivers
Download  6 Pages
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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54LS244FMQB Datasheet(HTML) 2 Page - National Semiconductor (TI)

   
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Absolute Maximum Ratings (Note)
If MilitaryAerospace specified devices are required
please contact the National Semiconductor Sales
OfficeDistributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
54LS
b
55 Cto a125 C
DM74LS
0 Cto a70 C
Storage Temperature Range
b
65 Cto 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
54LS244
DM74LS244
Units
Min
Nom
Max
Min
Nom
Max
VCC
Supply Voltage
45
5
55
475
5
525
V
VIH
High Level Input Voltage
2
2
V
VIL
Low Level Input Voltage
07
08
V
IOH
High Level Output Current
b
12
b
15
mA
IOL
Low Level Output Current
12
24
mA
TA
Free Air Operating Temperature
b
55
125
0
70
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
VI
Input Clamp Voltage
VCC e Min II eb18 mA
b
15
V
HYS
Hysteresis (VTa b VTb)VCC e Min
02
04
V
Data Inputs Only
VOH
High Level Output Voltage
VCC e Min VIH e Min
DM74
27
VIL e Max IOH eb1mA
VCC e Min VIH e Min
54LSDM74
24
34
V
VIL e Max IOH eb3mA
VCC e Min VIH e Min
54LSDM74
2
VIL e 05V IOH e Max
VOL
Low Level Output Voltage
VCC e Min
IOL e 12 mA
54LSDM74
04
VIL e Max
V
IOL e Max
DM74
05
VIH e Min
IOZH
Off-State Output Current
VCC e Max
VO e 27V
20
m
A
High Level Voltage Applied
VIL e Max
IOZL
Off-State Output Current
VIH e Min
VO e 04V
b
20
m
A
Low Level Voltage Applied
II
Input Current at Maximum
VCC e Max
VI e 7V (DM74)
01
mA
Input Voltage
VI e 10V (54LS)
IIH
High Level Input Current
VCC e Max
VI e 27V
20
m
A
IIL
Low Level Input Current
VCC e Max
VI e 04V
b
05
b
200
m
A
IOS
Short Circuit Output Current
VCC e Max (Note 2)
54LS
b
50
b
225
mA
DM74
b
40
ICC
Supply Current
VCC e Max
Outputs High
13
23
Outputs Open
Outputs Low
27
46
mA
Outputs Disabled
32
54
Note 1
All typicals are at VCC e 5V TA e 25 C
Note 2
Not more than one output should be shorted at a time and the duration should not exceed one second
2


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