DATA BULLETIN
MX623
MXCOM MiXed Signal CMOS Custom Tone Decoder (13 Call-Progress Frequencies Recognized) Operates to a 3.579545MHz Telephone System Clock Operates Under Simple Logic or µProcessor System Control
Line-Powered Call Progress Tone Detector
PRELIMINARY INFORMATION
Measures Call Progress Tone Frequencies (‘Busy’, ‘Dial’, ‘Fax-Tone’ et...