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LM339DT Просмотр технического описания (PDF) - STMicroelectronics
Номер в каталоге
Компоненты Описание
производитель
LM339DT
Low-power quad voltage comparators
STMicroelectronics
LM339DT Datasheet PDF : 19 Pages
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Typical applications
Figure 18. Limit comparator
V
CC
(12 V)
V
(ref)
high
2R
S
R
S
10 k
Ω
1/ 4
LM1
3
9
L
a
mp
e~
I
V
(ref)
low
2R
S
1/ 4
LM1
3
9
2N 2222
Figure 20. Zero crossing detector
15 V
LM139, LM239, LM339
Figure 19. Crystal-controlled oscillator
V
CC
= 15 V
200 k
Ω
0.1
μ
F
100 k
Ω
1/ 4
LM1
3
9
2 k
Ω
V
CC
0
e
o
200 k
Ω
f = 100 kHz
Figure 21. Comparator with a negative
reference
15 V
e
I
~
1/4
LM1
3
9
15 V
5.1 k
Ω
e
o
e
I
~
1/ 4
LM1
3
9
5V
15 V
5.1 k
Ω
e
o
10/19
Doc ID 2159 Rev 3
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