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RE46C121

Status: In Production

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 MC145018
  • Available in Standard Packaging or RoHS Complaint Pb Free Packaging
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The RE46C121 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. The temporal horn pattern supports the NFPA 72 emergency evacuation signal. 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. The RE46C121 was designed for use in smoke detectors that comply with Underwriters Laboratory Specification UL217 and UL268.

Additional 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 MC145018
  • Available in Standard Packaging or RoHS Complaint Pb Free Packaging
Parametrics
Name
Value
Type
Ionization
Horn Driver Alarm Pattern
NFPA Temporal
Low Battery Detect
True
Reverse Battery Protection
True
Alarm Interconnect
True
Sensitivty Timer
False
Powerup Low Battery
False
Operating Temperature Range (C)
-10C to 60C

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
RE46C121E16F
1.112700
2.041667
16
PDIP
.300in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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