RE46C126

The RE46C126 is low power CMOS ionization type smoke detector IC. With 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. . A 2/3 duty cycle continuous horn pattern is used for the alarm condition. An interconnect pin allows multiple detectors to be connected such that when one unit alarms all units will sound. Although this device was designed for smoke detection utilizing an ionization chamber it can be used in a variety of security applications. Utilizing low power CMOS technology the RE46C126 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
  • Low Quiescent Current Consumption (<6.5uA)
  • Available in 16L PDIP or 16L N SOIC
  • ESD Protection on all Pins
  • Interconnect up to 40 Detectors
  • Compatible with MC14468
  • Available in Standard Packaging or RoHS Complaint Pb Free Packaging
Parameter
Parameter Name Value Value
Type Ionization Ionization
Horn Driver Alarm Pattern Continuous Tone Continuous Tone
Low Battery Detect True True
Reverse Battery Protection True True
Alarm Interconnect True True
Sensitivty Timer False False
Powerup Low Battery False False
Operating Temperature Range (C) -10C to 60C -10C to 60C
Documents
CMOS Ionization Smoke Detector ASIC with InterconnectData Sheets10/19/2009209KB
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
RE46C126E16F16PDIP-10C to +60CCTUBE0.750.620.560.550.54
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RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
RE46C126E16F1.1127002.04166716PDIP.300inMatte Tine3
CMOS Ionization Smoke Detector ASIC with Interconnect RE46C126
Analog & Interface Product Selector Guide ENC624J600
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