Download RE46C120 Datasheet
www.DataSheet4U.com R&E International RE46C120 CMOS Ionization Smoke Detector ASIC Product Specification General Description The RE46C120 is 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 a 2/3 duty cycle 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) Available in 16L PDIP or 16L N SOIC ESD Protection on all Pins Compatible with MC145017, MC14467 Available in Standard Packaging or RoHS Complaint Pb Free Packaging Pin Configuration DETCOMP N/C LBADJ TONE LED VDD RBIAS FEED 1 2 3 4 5 6 7 8 16 15 14 1.