ST3917B Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

ST3917B

SPEECH - TONE/PULSE DIALER - LED INDICATOR

STMicroelectronics 

ST3917A - ST3917B

TYPICAL APPLICATION

2S A1013

100kΩ

10V

10Ω

A

B

1F

1

8

2

7

10 0 n F

3

6

4

5

5. 6 kΩ

BF393

10MΩ 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 kΩ

7 MODE/PT

8 HKS

HKS2

9 GND

R4 25

MU/MFI 24

VDD 23

GDTMF 22

+

4.7 F

+

100kΩ

10 RXOUT

11 GRX

MIC+ 21

MIC- 20

GTX 19

3.6kΩ

12 RXIN

13 IREF

REG 18

LN 17

14 VCC

ILINE 16

LED 15

123

F LAS H

4 5 6 TONE/PULSE

789

P AUSE

*0 #

LND

SECRET

3. 3 kΩ

470nF

10nF

Microphone

10 F

+

47kΩ

Zside tone

LED

5 .6 V

+ BAT42 +

62 0 Ω

4.7nF

3. 9 kΩ

14/16

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