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Datasheet Microchip RE46C144S16F

Part NumberRE46C144S16F

The RE46C144 is low power CMOS photoelectric type smoke detector IC


  • Download » Datasheet PDF, 1.1 Mb, Revision: 06-15-2012
    RE46C144 - CMOS Photoelectric Smoke Detector ASIC w/ Interconnect and Timer Mode
    Docket ↓
    CMOS Photoelectric Smoke Detector ASIC with Interconnect
    and Timer Mode
    Features General Description The RE46C144 is a low-power, CMOS photoelectrictype smoke detector IC. With minimal external
    components, this circuit will provide all the required
    features for a photoelectric-type smoke detector. Internal Power-On Reset
    Low Quiescent Current Consumption
    ESD Protection on all Pins
    Interconnect up to 40 Detectors
    10 Minute Timer for Sensitivity Control
    75% Duty Cycle Horn Pattern
    Internal Low Battery and Chamber Test
    Compatible with Allegro A5358
    UL Recognized per File S24036 The design incorporates a gain selectable photo
    amplifier for use with an infrared emitter/detector pair.
    An internal oscillator strobes power to the smoke
    detection circuitry for 100 Вµs every 10 seconds to keep
    standby current to a minimum. If smoke is sensed, the
    detection rate is increased to verify an Alarm condition.
    A High Gain mode is available for push-button chamber
    A check for a low-battery condition and chamber
    integrity is performed every 43 seconds, when in ...



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




Alarm InterconnectYes
Alternate Diagnostics ModeNo
Chamber TestYes
Horn Driver Alarm PatternContinuous Tone
Internal PORYes
Low Battery DetectYes
Operating Temperature-25 to 75 °C
Operating Temperature Range-25 to +75 °C
Operating VoltageV to Vdc
Sensitivity TimerYes

Eco Plan


Moldel Line

Series: RE46C144 (8)

Manufacturer's Classification

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