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DM74LS221N Datenblatt(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Teilenummer DM74LS221N
Bauteilbeschribung  Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs
PDF  6 Pages
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Hersteller  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DM74LS221N Datenblatt(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
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
DM74LS221
Units
Min
Nom
Max
VCC
Supply Voltage
475
5
525
V
VTa
Positive-Going Input Threshold Voltage
12
V
at the A Input (VCC e Min)
VTb
Negative-Going Input Threshold Voltage
08
1
V
at the A Input (VCC e Min)
VTa
Positive-Going Input Threshold Voltage
12
V
at the B Input (VCC e Min)
VTb
Negative-Going Input Threshold Voltage
08
09
V
at the B Input (VCC e Min)
IOH
High Level Output Current
b
04
mA
IOL
Low Level Output Current
8
mA
tW
Pulse Width
Data
40
ns
(Note 1)
Clear
40
tREL
Clear Release Time (Note 1)
15
ns
dV
dt
Rate of Rise or Fall of
1
V
s
Schmitt Input (B) (Note 1)
dV
dt
Rate of Rise or Fall of
1
V
m
s
Logic Input (A) (Note 1)
REXT
External Timing Resistor (Note 1)
14
100
kX
CEXT
External Timing Capacitance (Note 1)
0
1000
m
F
DC
Duty Cycle
RT e 2kX
50
%
(Note 1)
RT e REXT (Max)
60
TA
Free Air Operating Temperature
0
70
C
Note 1
TA e 25 C and VCC e 5V
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
VOH
High Level Output
VCC e Min IOH e Max
27
34
V
Voltage
VIL e Max VIH e Min
VOL
Low Level Output
VCC e Min IOL e Max
035
05
Voltage
VIL e Max VIH e Min
V
VCC e Min IOL e 4 mA
04
II
Input Current
Max
VCC e Max VI e 7V
01
mA
Input Voltage
2



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