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 - 5µA @ 2.5V
SA54X56 - 1µA @ 2.5V
SA54X59 - 1µA @ 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
SAMES [ SAMES ]
