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SA545

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FEATURES

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SA545, SA54L5

PULSE/DTMF SWITCHABLE DIALLERS WITH 10 REPERTORY

MEMORIES

Selectable Loop-disconnect (Pulse) or

DTMF (Tone) dialling modes

10 x 24 Digit Repertory Dialling Stores

24 Digit Last Number Redial (LNR)

Selectable Interdigit Pause (IDP)

500ms or 800ms

Operates with inexpensive single

contact keypad

On-chip Darlington transistor pair for

DTMF tone filtering

Low power CMOS technology enables

direct operation from Telephone line

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Selectable Break:Make Ratios 2:1 or

3:2

Uses inexpensive 560KHz ceramic

resonator

Earth Loop Recall and Timed Break

Recall (Timed Flash)

Low on-hook Supply Current Options

SA54X53 - 5碌A(chǔ) @ 2.5V

SA54X56 - 1碌A(chǔ) @ 2.5V

SA54X59 - 1碌A(chǔ) @ 3.0V

Call, barring/locking feature available

on the SA54L5

Optional use of external capacitor for

oscillator

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Keypad switchable Loop-Disconnect to

DTMF during a call

PIN CONNECTIONS:

SA545

PIN CONNECTIONS:

SA54L5

M63-1961

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1/18

PDS039-SA545-001

REV. B

31-08-94

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