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Datasheet Microchip RE46C145S16F

Part NumberRE46C145S16F

The RE46C145 is low power CMOS photoelectric type smoke detector IC


  • Download » Datasheet, PDF, 1.1 Mb, Revision: 08-01-2012
    RE46C145 Data Sheet
    Docket ↓
    CMOS Photoelectric Smoke Detector ASIC with Interconnect
    and Timer Mode
    Features: General Description: The RE46C145 is a low-power, CMOS photoelectric-type 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
    Temporal Horn Pattern
    Internal Low Battery and Chamber Test
    Compatible with Allegro A5366
    Alternate Diagnostic Mode
    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
    In diagnostic mode, the photo amplifier output is available on pin 15 for production calibration of the photo
    chamber. ...



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




Alarm InterconnectYes
Alternate Diagnostics ModeYes
Chamber TestYes
Horn Driver Alarm PatternNFPA Temporal
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: RE46C145 (5)

Manufacturer's Classification

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