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MC145017 Datasheet

Part NameDescriptionManufacturer
MC145017 Low-Power CMOS Ionlzatlon Smoke Detector IC with Temporal Pattern Horn Driver Motorola
Motorola => Freescale Motorola
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The MC145017, 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.

• 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 Outputs for Detect and Low Battery
• Internal Reverse Battery Protection
• Supports NFPA 72, ANSi 53.41, and ISO 8201 Audible Emergency Evacuation Signals

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