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DM74LS221 数据表(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 DM74LS221
功能描述  Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs
PDF  6 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

DM74LS221 数据表(HTML) 3 Page - National Semiconductor (TI)

  DM74LS221 Datasheet HTML 1Page - National Semiconductor (TI) DM74LS221 Datasheet HTML 2Page - National Semiconductor (TI) DM74LS221 Datasheet HTML 3Page - National Semiconductor (TI) DM74LS221 Datasheet HTML 4Page - National Semiconductor (TI) DM74LS221 Datasheet HTML 5Page - National Semiconductor (TI) DM74LS221 Datasheet HTML 6Page - National Semiconductor (TI)  
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Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted) (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
IIH
High Level Input Current
VCC e Max VI e 27V
20
m
A
IIL
Low Level Input
VCC e Max
A1 A2
b
04
Current
VI e 04V
B
b
08
mA
Clear
b
08
IOS
Short Circuit
VCC e Max
b
20
b
100
mA
Output Current
(Note 2)
ICC
Supply Current
VCC e Max
Quiescent
47
11
mA
Triggered
19
27
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
Switching Characteristics
at VCC e 5V and TA e 25 C
Symbol
Parameter
From (Input)
Conditions
Min
Max
Units
To (Output)
tPLH
Propagation Delay Time
A1 A2
CEXT e 80 pF
70
ns
Low to High Level Output
to Q
REXT e 2kX
tPLH
Propagation Delay Time
B
CL e 15 pF
55
ns
Low to High Level Output
to Q
RL e 2kX
tPHL
Propagation Delay Time
A1 A2
80
ns
High to Low Level Output
to Q
tPHL
Propagation Delay Time
B
65
ns
High to Low Level Output
to Q
tPLH
Propagation Delay Time
Clear to
65
ns
Low to High Level Output
Q
tPHL
Propagation Delay Time
Clear
55
ns
High to Low Level Output
to Q
tW(out)
Output Pulse
A1 A2
CEXT e 0
Width Using Zero
to Q Q
REXT e 2kX
20
70
ns
Timing Capacitance
RL e 2kX
CL e 15 pF
tW(out)
Output Pulse
A1 A2
CEXT e 100 pF
Width Using External
to Q Q
REXT e 10 kX
600
750
ns
Timing Resistor
RL e 2kX
CL e 15 pF
CEXT e 1 mF
REXT e 10 kX
6
75
ms
RL e 2kX
CL e 15 pF
CEXT e 80 pF
REXT e 2kX
70
150
ns
RL e 2kX
CL e 15 pF
3



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