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FEATURES
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SA541, SA54L1
PULSE/DTMF SWITCHABLE DIALLERS
Selectable Loop-Disconnect (Pulse)
or DTMF (Tone) dialling modes
32 Digit Last Number Redial (LNR)
Selectable Interdigit Pause (IDP)
500ms or 800ms
Operates with inexpensive single con-
tact keypad
On-chip Darlington transistor pair for
DTMF tone filtering
Low power CMOS technology enables
direct operation from Telephone line
Optional use of external capacitor for
oscillator
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Keypad switchable Loop-Disconnect to
DTMF during a call
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
SA5413 - 5µA @ 2.5V
SA5416 - 1µA @ 2.5V
SA5419 - 1µA @ 3.0V
Call, barring/locking feature available
on the SA54L1
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PIN CONNECTIONS:
SA541
PIN CONNECTIONS:
SA54L1
1/16
M57-1529
PDS039-SA541-001
REV. B
02-09-94
SAMES [ SAMES ]
