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DM74LS221 Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part No. DM74LS221
Description  Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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DM74LS221 Datasheet(HTML) 5 Page - Fairchild Semiconductor

   
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Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 5: All typicals are at VCC = 5V, TA = 25°C.
Note 6: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 5)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max
2.7
3.4
V
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
0.35
0.5
Output Voltage
VIL = Max, VIH = Min
V
VCC = Min, IOL = 4 mA
0.4
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
20
µA
IIL
LOW Level
VCC = Max
A1, A2
−0.4
Input Current
VI = 0.4V
B
−0.8
mA
Clear
−0.8
IOS
Short Circuit
VCC = Max
−20
−100
mA
Output Current
(Note 6)
ICC
Supply Current
VCC = Max
Quiescent
4.7
11
mA
Triggered
19
27
Symbol
Parameter
From (Input)
Conditions
Min
Max
Units
To (Output)
tPLH
Propagation Delay Time
A1, A2
CEXT = 80 pF
70
ns
LOW-to-HIGH Level Output
to Q
REXT = 2 kΩ
tPLH
Propagation Delay Time
B
CL = 15 pF
55
ns
LOW-to-HIGH Level Output
to Q
RL = 2 kΩ
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 = 0
Width Using Zero
to Q, Q
REXT = 2 kΩ
20
70
ns
Timing Capacitance
RL = 2 kΩ
CL = 15 pF
tW(out)
Output Pulse
A1, A2
CEXT = 100 pF
Width Using External
to Q, Q
REXT = 10 kΩ
600
750
ns
Timing Resistor
RL = 2 kΩ
CL = 15 pF
CEXT = 1 µF
REXT = 10 kΩ
67.5
ms
RL = 2 kΩ
CL = 15 pF
CEXT = 80 pF
REXT = 2 kΩ
70
150
ns
RL = 2 kΩ
CL = 15 pF


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