MX633 detector equivalent, call procress tone detector.
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* Worldwide Tone Compatibility Single and Dual Tones Detected U.S. Busy-Detect Output Voice-Detect Output Wide Dynamic Range.
* Automatic Calling Products
XTAL/ CLOCK XTAL / CLOCK OSCILLATOR XTAL
VDD VSS
ENABLE
DETECT1 SIGIN SLICER SIGNAL.
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