LC737212 Ver la hoja de datos (PDF) - SANYO -> Panasonic

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componentes Descripción

Fabricante

LC737212

Telephone Dialer IC with On-Chip Memory for PushButton Telephones

SANYO -> Panasonic 

Pin Functions

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Symbol

C5

R1

R2

R3

R4

R5

SOUT-ENA

HOLD-OFF IN

ON-HOOK DIAL IN

SI/KEY

ON-HOOK

DPR

R/T

BMR

XIN

XOUT

OFF/ON-HOOK STORE

VDD

VSS

SP-CTL

DTMF

MUTE2

MUTE1

S-OUT

DP

K-TONE

HOOK-CTL

HOLD-OUT

DISCON IN

C1

C6

C7

C2

C8

C3

C4

LC737212, 737212M

Column input

Function

Row input

Serial output enable, H: enable, L: disable

Hold mode clear input; falling edge detection.

On-hook dialing input; falling edge detection

Serial input/keypad input switching

Hook-switching input

Dialing pulse rate switching; H: 20 pps, L: 10 pps

Pulse/tone switching; H:pulse, L: tone

Make percentage switching input; H: 33%, L: 39%

Oscillator circuit. Connect either a crystal or ceramic oscillator element with a

frequency of 3.58 MHz between these pins.

Off-hook store/on-hook store switching

Power supply

Speaker reception control output; complementary output

DTMF output; npn emitter-follower output

DTMF mute output; n-channel open drain output

DP and K-TONE muting output; n-channel open drain output

Serial data output; n-channel open drain output

Dialing pulse output; n-channel open drain output

K-tone output; complementary output

Hook control output; complementary output

Hold mode output; complementary output

Disconnect input

Column inputs

No. 5203-8/27

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