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50%
A
t WH
B
RESET
T
t PLH
50%
50%
Q
t PHL
t PHL
Q
50%
T A = 25 C
R X = 100 kΩ
C X = 0.1 µF
1.0
0.8
0.6
0.4
0.2
0
– 4
– 2
T, OUTPUT PULSE WIDTH (%)
Figure 5. Typical Normalized Distribution
of Units for Output Pulse Width
1000
R X = 100 kΩ, C L = 50 pF
ONE MONOSTABLE SWITCHING ONLY
100
10
10 V
1.0
0.1
0.001
0.1
1.0
OUTPUT DUTY CYCLE (%)
Figure 7. Typical Total Supply Current
versus Output Duty Cycle
MOTOROLA CMOS LOGIC DATA
90%
t TLH
50%
t WL
t THL
90%
10%
t THL
t PLH
t TLH
90%
50%
10%
t THL
t TLH
90%
50%
10%
Figure 4. Switching Test Waveforms
0% POINT PULSE WIDTH
V DD = 5.0 V, T = 9.8 ms
V DD = 10 V, T = 10 ms
V DD = 15 V, T = 10.2 ms
0
2
4
V DD = 15 V
5.0 V
10
100
10%
t THL
t THL
t TLH
90%
10%
t PHL
50%
t WL
t PHL
t PLH
50%
2
1
0
1
2
5
6
7
8
V DD , SUPPLY VOLTAGE (VOLTS)
Figure 6. Typical Pulse Width Variation as
a Function of Supply Voltage V DD
FUNCTION TABLE
Inputs
Reset
A
H
H
L
H
H
H
H
L, H,
H
L
L
X
X
50%
V DD
V DD
V DD
t rr
50%
50%
R X = 100 kΩ
C X = 0.1 µF
9
10
11
12
13
14
Outputs
B
Q
Q
H
L
Not Triggered
Not Triggered
H
Not Triggered
L, H,
Not Triggered
X
L
H
X
Not Triggered
MC14538B
6–369
15
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