SA541 Datasheet, PDF (1/16 Pages) Sames – PULSE/DTMF SWITCHABLE DIALLERS

sames
SA541, SA54L1
PULSE/DTMF SWITCHABLE DIALLERS
FEATURES
s Selectable Loop-Disconnect (Pulse)
or DTMF (Tone) dialling modes
s Keypad switchable Loop-Disconnect to
DTMF during a call
s 32 Digit Last Number Redial (LNR) s Selectable Break:Make Ratios 2:1 or
s Selectable Interdigit Pause (IDP)
3:2
500ms or 800ms
s Uses inexpensive 560KHz ceramic
s Operates with inexpensive single con-
resonator
tact keypad
s Earth Loop Recall and Timed Break
s On-chip Darlington transistor pair for
Recall (Timed Flash)
DTMF tone filtering
s Low on-hook Supply Current options
s Low power CMOS technology enables
direct operation from Telephone line
SA5413 - 5µA @ 2.5V
SA5416 - 1µA @ 2.5V
SA5419 - 1µA @ 3.0V
s
Optional use of external capacitor for
oscillator
s
Call, barring/locking feature available
on the SA54L1
PIN CONNECTIONS:
SA541
PIN CONNECTIONS:
SA54L1
M57-1529
PDS039-SA541-001
REV. B
1/16
02-09-94