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LM239AD Datasheet(PDF) 9 Page - STMicroelectronics

Part No. LM239AD
Description  Low-power quad voltage comparators
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LM239AD Datasheet(HTML) 9 Page - STMicroelectronics

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LM139, LM239, LM339
Typical applications
Doc ID 2159 Rev 2
9/16
Figure 17.
Limit comparator
Figure 18.
Crystal-controlled oscillator
10 k
Ω
e
I
~
R
S
2R
S
V
(ref)
high
V
(ref)
low
2N 2222
V
CC
Lamp
1/ 4
LM139
1/ 4
LM139
2R
S
(12 V)
2 k
Ω
200 k
Ω
e
o
V
CC
0
100 k
Ω
200 k
Ω
1/ 4
LM139
0.1
μF
f = 100 kHz
V
CC
= 15 V
Figure 19.
Zero crossing detector
Figure 20.
Comparator with a negative
reference
15 V
5.1 k
Ω
e
o
e
I
~
15 V
1/4
LM139
15 V
5.1 k
Ω
e
o
e
I
~
15 V
5 V
1/ 4
LM139


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