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MC74HC4538A Datasheet(PDF) 6 Page - ON Semiconductor

Part No. MC74HC4538A
Description  Dual Precision Monostable Multivibrator (Retriggerable,Resettable)
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74HC4538A Datasheet(HTML) 6 Page - ON Semiconductor

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MC74HC4538A
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OUTPUT PULSE WIDTH CHARACTERISTICS (CL = 50 pF)t
Symbol
Parameter
Conditions
Guaranteed Limits
Unit
Timing Components
VCC
V
–55 to 25
_C
v 85_C
v 125_C
Min
Max
Min
Max
Min
Max
τ
Output Pulse Width*
(Figures 6 and 8)
Rx = 10 kW, Cx = 0.1 mF
5.0
0.63
0.77
0.6
0.8
0.59
0.81
ms
Pulse Width Match Between
Circuits in the same Package
± 5.0
%
Pulse Width Match Variation
(Part to Part)
± 10
%
*For output pulse widths greater than 100
ms, typically τ = kRxCx, where the value of k may be found in Figure 3.
Figure 3. Typical Output Pulse Width Constant,
k, versus Supply Voltage
(For output pulse widths
> 100 ms: τ = kRxCx)
Figure 4. Output Pulse Width versus Timing Capacitance
Figure 5. Normalized Output Pulse Width versus Power Supply Voltage
0.8
0.7
0.6
0.5
0.4
0.3
10 s
1 s
100 ms
10 ms
1 ms
100
ms
10
ms
1
ms
100 ns
1.1
1
0.9
0.8
0.7
0.6
0.5
123
45
67
0.00001
0.0001
0.001
0.01
0.1
1
10
100
1
2
3456
7
VCC, POWER SUPPLY VOLTAGE (VOLTS)
CAPACITANCE (
mF)
VCC, POWER SUPPLY VOLTAGE (VOLTS)
TA = 25°C
VCC = 5 V, TA = 25°C
TA = 25°C
Rx = 100 kW
Cx = 1000 pF
Rx = 1 MW
Cx = 0.1 mF
1 k
W
10 k
W
1 M
W
100 k
W


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