MC14538 ONSEMI [ON Semiconductor], MC14538 Datasheet - Page 6

• Manufacturer Part Number: MC14538
• Description: Dual Precision Retiggerable/Resettable Monostable Multivibrator
• Manufacturer: ONSEMI [ON Semiconductor]

GENERATOR
GENERATOR
GENERATOR
RESET
1.0
0.8
0.6
0.4
0.2
PULSE
PULSE
PULSE
0
Q
Q
A
B
t
T
R
C
PLH
A
X
X
Figure 5. Typical Normalized Distribution
= 25 C
= 100 k
= 0.1 F
V
SS
of Units for Output Pulse Width
50%
50%
50%
t
PHL
T, OUTPUT PULSE WIDTH (%)
– 4
T
A
B
RESET
A
B
RESET
C
X
R
X
t
WH
– 2
t
PHL
C
50%
V
X
DD
/R
V
X
SS
0
t
PLH
R
50%
X
Q
Q
50%
Q
Q
50%
C
0% POINT PULSE WIDTH
V
V
V
2
X
DD
DD
DD
C
= 5.0 V, T = 9.8 ms
= 10 V, T = 10 ms
= 15 V, T = 10.2 ms
L
4
t
V
t
t
Figure 4. Switching Test Waveforms
WL
THL
TLH
SS
C
* C
L
10%
Figure 3. Switching Test Circuit
90%
t
10%
TLH
90%
L
C
= 50 pF
L
C
t
http://onsemi.com
t
THL
t
L
TLH
THL
90%
MC14538B
10%
90%
10%
* Includes capacitance of probes,
NOTE: Switching test waveforms
6
t
wiring, and fixture parasitic.
THL
50%
t
THL
t
t
50%
PHL
PLH
90%
for PG1, PG2, PG3 are shown
In Figure 4.
10%
t
2
1
0
1
2
WL
t
PHL
5
t
T, t
t
T, t
t
t
Figure 6. Typical Pulse Width Variation as
PLH
PLH
PLH(R)
WH
6
WH
WH
, t
Characteristics
, t
, t
a Function of Supply Voltage V
WL
PHL
, t
PHL
, t
, t
7
WL
WL
PHL(R)
, t
, t
t
TLH
V
TLH
TLH
DD
8
INPUT CONNECTIONS
,
, SUPPLY VOLTAGE (VOLTS)
, t
, t
THL
THL
9
,
,
R
C
X
X
10
50%
50%
= 100 k
= 0.1 F
Reset
50%
PG3
V
V
DD
DD
11
PG1 =
PG2 =
PG3 =
12
t
rr
PG1
PG1
V
A
SS
13
DD
14
V
V
V
PG2
PG2
V
DD
DD
DD
B
DD
15