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Datasheet Microchip RE46C120E16F

Part NumberRE46C120E16F

The RE46C120 is a low power CMOS ionization type smoke detector IC


  • Download » Datasheet PDF, 211 Kb, Revision: 10-21-2009
    CMOS Ionization Smoke Detector ASIC
    Docket ↓
    R&E International
    A Subsidiary of Microchip Technology Inc. RE46C120
    CMOS Ionization Smoke Detector ASIC
    Product Specification General Description Features The RE46C120 is a low power CMOS ionization type
    smoke detector IC. With a few external components
    this circuit will provide all the required features for an
    ionization type smoke detector. An internal oscillator strobes power to the smoke
    detection circuitry for 10.5mS every 1.66 seconds to
    keep standby current to a minimum. A check for a low
    battery condition is performed every 40 seconds when
    in standby. The TONE input allows for selection of a
    temporal pattern or a 2/3 duty cycle continuous tone.
    The temporal horn pattern supports the NFPA 72
    emergency evacuation signal. Guard Outputs for Ion Detector Input
    +/-0.75pA Detect Input Current
    Internal Reverse Battery Protection
    Internal Low Battery Detection
    Pin Selectable Horn Pattern
    Low Quiescent Current Consumption (<6.5uA)
    16L PDIP
    ESD Protection on all Pins
    Compatible with MC145017, MC14467
    UL Recognized per File S24036 ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




Alarm InterconnectNo
Horn Driver Alarm PatternNFPA Temporal or Continuous Tone
Low Battery DetectYes
Operating Temperature-10 to 60 °C
Operating Temperature Range-10 to +60 °C
Powerup Low Battery TestNo
Reverse Battery ProtectionYes
Sensitivity TimerNo

Eco Plan


Moldel Line

Series: RE46C120 (1)
  • RE46C120E16F

Manufacturer's Classification

  • CO and Smoke Detection > CO and Smoke Detector ICs > Ionization Smoke Detector ICs
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