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Silan

Semiconductors

TONE / PULSE SWITCHABLE DIALER

WITH HANDFREE FUNCTION

DESCRIPTION

The SC91710A/B are Tone/Pulse switchable dialer which are

fabricated in COMS technology with wide operating voltage for both

tone and pulse mode, and consumes very low memory retention

current in ON-HOOK state.

SC91710A/B

DIP-16

FEATURES

*Tone/Pulse switchable dialer

*One 32-digit last number redial memory

*Pulse-to-tone (P鈫扵) is provided for PBX operation

*Flash key is available

*Minimum tone duration is 98ms or 83ms

*Minimum intertone pause is 98ms or 83ms

*Redial Pause time (0ms)

*Uses 3.579549MHz crystal or ceramic resonator

*Many options can be selected

Mode (10PPS; 20PPS; Tone)

M/B ratio (40:60;33:66)

Pause time (3.6s)

*Flash function (RESET)

(P鈫扵) pause time (3.6s)

Flash time (600ms; 300ms; 100ms; or 80ms)

*Mixed dialing

*Power on reset circuit is provided

*Handfree function is provided for speaker

phone application

*Packaged in 16-DIP or 18-DIP

DIP-18

ORDERING INFORMATION

SC91710A

SC91710B

DIP-16 Packaged

DIP-18 Packaged

PIN CONFIGURATION

C2

C2

C3

C4

C1

OSCI

OSCO

XMUTE

V

SS

1

2

3

4

5

6

7

8

9

SC91710B

18

17

16

15

14

13

12

11

10

R3

R2

R1

R4

TONE

PO

HKS

V

DD

HFO

1

2

3

4

5

6

7

8

SC91710A

16

15

14

13

12

11

10

9

R3

C3

R2

C4

R1

C1

R4

OSCI

TONE

OSCO

PO

XMUTE

HKS

V

SS

V

DD

HFI

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.0

2001-11-13

1

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