Design Resources

CMX673: Suggested Applications

The CMX673 is an 8-pin DIP or 16-pin SOIC signal-detector that operates on energy in the frequency band of about 315 to 650 Hz. Its primary use is in the detection of status tones encountered during the progression of a telephone call. These tones include: dial tone, circuits busy, ring tone, station busy and others. Call status is derived by examining the cadence of those tones.


Package: D4 (DW)

16-pin SOIC


Package: E3

20-pin TSSOP


Package: P1

8-pin PDIP


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