Datasheet

Typical applications LM139, LM239, LM339
10/19 Doc ID 2159 Rev 3
Figure 18. Limit comparator Figure 19. Crystal-controlled oscillator
10 kΩ
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 kΩ
200 kΩ
e
o
V
CC
0
100 kΩ
200 kΩ
1/ 4
LM139
0.1 μF
f = 100 kHz
V
CC
= 15 V
Figure 20. Zero crossing detector Figure 21. Comparator with a negative
reference
15 V
5.1 kΩ
e
o
e
I
~
15 V
1/4
LM139
15 V
5.1 kΩ
e
o
e
I
~
15 V
5 V
1/ 4
LM139