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Datasheet Microchip RE46C168E16F

Part NumberRE46C168E16F

The RE46C168 device is a low-power, CMOS photoelectric type, smoke detector IC


  • Download » Datasheet, PDF, 551 Kb, Revision: 03-29-2016
    RE46C165/6/7/8 Data Sheet
    Docket ↓
    CMOS Photoelectric Smoke Detector ASIC
    with Interconnect, Timer Mode and Alarm Memory
    Features Description Temporal Horn Pattern or Continuous Tone Alarm Memory Sensitivity Control Times:
    -9 minutes (RE46C165/6)
    -1.2 minutes (RE46C167/8) I/O Filter and Charge Dump Interconnect up to 40 Detectors Internal Power-on Reset (POR) >2000V ESD Protection (HBM) on All Pins Low Quiescent Current Consumption (<8 ВµA) Internal Low Battery Detection and Chamber Test RoHS Compliant Lead-Free Packaging The RE46C165/6/7/8 devices are low-power, CMOS
    photoelectric type, smoke detector ICs. With minimal
    external components, these circuits will provide all the
    required features for a photoelectric type smoke
    Each 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 testing.
    A check for a low battery condition and chamber
    integrity is performed every 43 seconds when in
    standby. The temporal horn pattern supports the
    NFPA 72 emergency evacuation signal.
    An interconnect pin allows multiple detectors to be ...



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




Alarm InterconnectYes
Alternate Diagnostics ModeYes
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 Voltage6V to 12V Vdc
Sensitivity TimerYes

Eco Plan


Other Options

RE46C165 RE46C166 RE46C167

Moldel Line

Series: RE46C168 (3)

Manufacturer's Classification

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