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MC14468 - Low-Power CMOS Ionization Smoke Detector IC

Key Features

  • Ionization Type with On-Chip FET Input Comparator.
  • Piezoelectric Horn Driver.
  • Guard Outputs on Both Sides of Detect Input.
  • Input-Production Diodes on the Detect Input.
  • Low-Battery Trip Point, Internally Set, can be Altered Via External Resistor.
  • Detect Threshold, Internally Set, can be Altered Via External Resistor.
  • Pulse Testing for Low Battery Uses LED for Battery Loading.
  • Comparator Output for Detect.
  • Internal R.

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Full PDF Text Transcription (Reference)

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Freescale Semiconductor Technical Data Low-Power CMOS Ionization Smoke Detector IC with Interconnect The MC14468, when used with an ionization chamber and a small number of external components, will detect smoke. When smoke is sensed, an alarm is sounded via an external piezoelectric transducer and internal drivers. This circuit is designed to operate in smoke detector systems that comply with UL217 and UL268 specifications.