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| CD4538BC Datasheet, PDF (6/11 Pages) Fairchild Semiconductor – Dual Precision Monostable | |||
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AC Electrical Characteristics (Note 4)
TA = 25°C, CL = 50 pF, and tr = tf = 20 ns unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
tTLH, tTHL
Output Transition Time
tPLH, tPHL
Propagation Delay Time
VDD = 5V
VDD = 10V
VDD = 15V
Trigger Operationâ
A or B to Q or Q
VDD = 5V
VDD = 10V
VDD = 15V
Reset Operationâ
100
200
ns
50
100
ns
40
80
ns
300
600
ns
150
300
ns
100
220
ns
tWL, tWH
tRR
CIN
Minimum Input Pulse Width
A, B, or CD
Minimum Retrigger Time
Input Capacitance
CD to Q or Q
VDD = 5V
VDD = 10V
VDD = 15V
VDD = 5V
VDD = 10V
VDD = 15V
VDD = 5V
VDD = 10V
VDD = 15V
Pin 2 or 14
Other Inputs
250
500
ns
125
250
ns
95
190
ns
35
70
ns
30
60
ns
25
50
ns
0
ns
0
0
ns
0
ns
10
pF
5
7.5
pF
PWOUT
Output Pulse Width (Q or Q)
(Note: For Typical Distribution,
see Figure 6)
Pulse Width Match between
Circuits in the Same Package
CX = 0.1 µF, RX = 100 kâ¦
Operating Conditions
RX = 100 kâ¦
CX = 0.002 µF
RX = 100 kâ¦
CX = 0.1 µF
RX = 100 kâ¦
CX = 10.0 µF
RX = 100 kâ¦
CX = 0.1 µF
VDD = 5V
VDD = 10V
VDD = 15V
VDD = 5V
VDD = 10V
VDD = 15V
VDD = 5V
VDD = 10V
VDD = 15V
VDD = 5V
VDD = 10V
VDD = 15V
208
226
244
µs
211
230
248
µs
216
235
254
µs
8.83
9.60
10.37
ms
9.02
9.80
10.59
ms
9.20
10.00 10.80
ms
0.87
0.95
1.03
s
0.89
0.97
1.05
s
0.91
0.99
1.07
s
±1
%
±1
%
±1
%
RX
External Timing Resistance
CX
External Timing Capacitance
Note 4: AC parameters are guaranteed by DC correlated testing.
5.0
(Note 5)
kâ¦
0
No Limit pF
Note 5: The maximum usable resistance RX is a function of the leakage of the Capacitor CX, leakage of the CD4538BC, and leakage due to board layout,
surface resistance, etc.
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