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    Text: M-9220 3V/5V General Purpose Call Progress Tone Detector General Description Applications • Autom atic Dialers The Teltone M-9220 is an integrated circuit tone detector for general purpose use in automatic following of switched telephone calls. The circuit uses low power C M O S tech­


    OCR Scan     		PDF M-9220 M-9220 M-9220-01P 22121-20th aT3E44S DDD23S4