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MC14538B Datasheet(PDF) 5 Page - Motorola, Inc

Part No. MC14538B
Description  DUAL PRECISION RETRIGGERABLE / RESETTABLE MONOSTABLE MULTIVIBRATOR
Download  10 Pages
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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MC14538B Datasheet(HTML) 5 Page - Motorola, Inc

 
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MOTOROLA CMOS LOGIC DATA
5
MC14538B
Figure 4. Switching Test Waveforms
RESET
A
B
tPLH
Q
Q
50%
tWH
90%
10%
tTLH
tTHL
tWL
tTHL
tPHL
tTHL
90%
10%
50%
T
50%
50%
50%
90%
10%
tPLH
tTHL
tTLH
tPHL
tWL
50%
90%
10%
tPHL tPHL
tTLH
tTHL
tPLH
50%
50%
90%
10%
50%
50%
50%
trr
50%
VDD
VDD
VDD
tTLH
Figure 5. Typical Normalized Distribution
of Units for Output Pulse Width
Figure 6. Typical Pulse Width Variation as
a Function of Supply Voltage VDD
0
0.2
0.4
0.6
0.8
1.0
– 4
– 2
0
2
4
T, OUTPUT PULSE WIDTH (%)
2
1
0
1
2
15
14
13
12
11
10
9
8
7
6
5
VDD, SUPPLY VOLTAGE (VOLTS)
TA = 25°C
RX = 100 kΩ
CX = 0.1 µF
0% POINT PULSE WIDTH
VDD = 5.0 V, T = 9.8 ms
VDD = 10 V, T = 10 ms
VDD = 15 V, T = 10.2 ms
RX = 100 kΩ
CX = 0.1 µF
Figure 7. Typical Total Supply Current
versus Output Duty Cycle
1000
100
10
1.0
0.1
0.001
0.1
1.0
10
100
OUTPUT DUTY CYCLE (%)
RX = 100 kΩ, CL = 50 pF
ONE MONOSTABLE SWITCHING ONLY
VDD = 15 V
10 V
5.0 V
FUNCTION TABLE
Inputs
Outputs
Reset
A
B
Q
Q
H
H
H
L
H
L
Not Triggered
H
H
Not Triggered
H
L, H,
H
Not Triggered
H
L
L, H,
Not Triggered
L
X
X
L
H
X
X
Not Triggered


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