PULSE/DTMF SWITCHABLE DIALLERS
Description
sames
FEATURES
s
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 contact keypad On-chip Darlington transistor pair for DTMF tone filtering Low power CMOS technology enables direct ...
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