CMX673 Datasheet (Consumer Microcircuits Limited)

CMX673, Call Progress Tone Detector

The CMX673 is a general purpose call progress tone detector for use in Public Switched Telephone System (PSTN) applications.

Call progress detection allows equipment which dials into the PSTN network to monitor the progress of the resulting call.

Ringing, Busy, Not available and Answer states can be

CMX673 Features

* Worldwide Tone Compatibility Single and Dual Tones Detected Wide Dynamic Signal Range Fast Response Time Low Power Operation 500µA at 3.0V 3.58MHz Xtal/Clock Oscillator Applications