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SA556 데이터 시트보기 (PDF) - STMicroelectronics
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SA556
General-purpose dual bipolar timers
STMicroelectronics
SA556 Datasheet PDF : 16 Pages
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Application information
NE556 - SA556 - SE556
Figure 16. Astable operation
V
CC
R
L
R
A
4
14
(10)
(13)
1
1/2
Out
p
ut
5 (9)
NE556
SE556
R
B
(12)
R
L
(11)
(8)
2
7
3
6
C
0.01nF
O
p
erating
f
requency
1.44
f
=
R
A
+ 2R
B
) C
t
1
= 0.693 (R
A
+ R
B
) C output high
t
2
= 0.693 R
B
C output low
t
2
t
1
10/16
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