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ST3917B 데이터 시트보기 (PDF) - STMicroelectronics
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ST3917B
SPEECH - TONE/PULSE DIALER - LED INDICATOR
STMicroelectronics
ST3917B Datasheet PDF : 16 Pages
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ST3917A - ST3917B
TYPICAL APPLICATION
2S A1013
100k
Ω
10V
10
Ω
A
B
1F
1
8
2
7
10 0 n F
3
6
4
5
5. 6 k
Ω
BF393
10M
Ω
Options
S T3917A/B
1
C1
R1
28
2
C2
R2
27
3
C3
R3
26
DTMF
P ulse
4
SEL
Ce ramic
5
OSC
3.58MHz
6
P ULSE
1 00 k
Ω
7
MODE/PT
8
HKS
HKS2
9
GND
R4
25
MU/MFI
24
V
DD
23
GDTMF
22
+
4.7 F
+
100k
Ω
10
RXOUT
11
GRX
MIC+
21
MIC-
20
GTX
19
3.6k
Ω
12
RXIN
13
I
REF
REG
18
LN
17
14
V
CC
ILINE
16
LED
15
123
F LAS H
4 5 6 TONE/PULSE
789
P AUSE
*
0 #
LND
SECRET
3. 3 k
Ω
470nF
10nF
Microphone
10 F
+
47k
Ω
Zside tone
LED
5 .6 V
+
BAT42
+
62 0
Ω
4.7nF
3. 9 k
Ω
14/16
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