RE46C120

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 continuous tone. The temporal horn pattern supports the NFPA 72 emergency evacuation signal. Although this device was designed for smoke detection utilizing an ionization chamber it could be used in a variety of security applications. Utilizing low power CMOS technology the RE46C120 was designed for use in smoke detectors that comply with Underwriters Laboratory Specification UL217 and UL268.

Features
  • 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
  • Available in RoHS Compliant Pb Free Packaging
Parameter
Parameter Name Value Value
Type Ionization Ionization
Horn Driver Alarm Pattern NFPA Temporal or Continuous Tone NFPA Temporal or Continuous Tone
Low Battery Detect True True
Reverse Battery Protection True True
Alarm Interconnect False False
Sensitivty Timer False False
Powerup Low Battery False False
Operating Temperature Range (C) -10C to 60C -10C to 60C
Documents
CMOS Ionization Smoke Detector ASICData Sheets10/21/2009205KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
RE46C120E16F16PDIP-10C to +60CCTUBE0.750.620.560.550.54
Similar Devices
ProductHorn Driver Alarm PatternPrice5K
RE46C120NFPA Temporal or Continuous Tone$0.54
RE46C121NFPA Temporal$0.54
RE46C122NFPA Temporal$0.57
RE46C126Continuous Tone$0.54
RE46C127Continuous Tone$0.57
RE46C129Continuous Tone$0.57
RE46C140NFPA Temporal$0.60
RE46C141NFPA Temporal$0.60
RE46C143Continuous Tone$0.60
RE46C144Continuous Tone$0.60
RE46C145NFPA Temporal$0.76
RE46C152NFPA Temporal or Continuous Tone$0.54
RE46C162NFPA Temporal or Continuous Tone$0.89
RE46C163NFPA Temporal or Continuous Tone$0.89
RE46C165NFPA Temporal$0.71
RE46C166Continuous Tone$0.71
RE46C167NFPA Temporal$0.71
RE46C168Continuous Tone$0.72
RE46C180NFPA Temporal or Continuous Tone$0.83
RE46C190NFPA Temporal or Continuous Tone$0.94
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
RE46C120E16F1.1127002.04166716PDIP.300inMatte Tine3
CMOS Ionization Smoke Detector ASIC RE46C120
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