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Programmable Ionization Smoke Detector ASIC with Interconnect,Timer Mode, Alarm Memory

RE46C181

Status: In Production

Features:

  • 6 -12V Operation
  • Low Quiescent Current Consumption
  • +/- 0.75pA Detect Input Current
  • Guard Outputs for Ion Detector Input
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Overview
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Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The RE46C181 is a next generation low power programmable CMOS ionization type smoke detector IC. With minimal external components this circuit will provide all the required features for an ionization type smoke detector. An on-chip oscillator strobes power to the smoke detection circuitry for 5ms every 10 seconds to keep standby current to a minimum. A check for a low battery condition is performed every 80 seconds and ionization chamber test is performed once every 320 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. A charge dump feature will quickly discharge the interconnect line when exiting a local alarm. The interconnect input is also digitally filtered. An internal 9 minute timer can be used for a reduced sensitivity mode. A local alarm memory feature allows the user to determine if the unit has previously entered a local alarm condition.  A Chamber Monitor function checks for ionization chamber degradation. 

Additional Features
  • 6 -12V Operation
  • Low Quiescent Current Consumption
  • +/- 0.75pA Detect Input Current
  • Guard Outputs for Ion Detector Input
  • Programmable Standby Sensitivity
  • Programmable Hush Sensitivity
  • Programmable Hysteresis
  • Programmable Chamber Voltage for Push-to-Test
  • Programmable Low Battery Set Point
  • Local Alarm Memory
  • 9 Minute Hush Timer
  • Temporal Horn Pattern
  • Interconnect up to 40 Detectors
  • IO Filter and Charge Dump
  • 10-Year End-of-Life Indication
  • Chamber Monitor Warning
Parametrics
Name
Value
Type
Ionization
Horn Driver Alarm Pattern
NFPA Temporal
Low Battery Detect
True
Reverse Battery Protection
False
Alarm Interconnect
True
Sensitivty Timer
True
Powerup Low Battery
True
Alternate Diagnostics Mode
False
Chamber Test
True
Internal POR
True
Operating Temperature Range (C)
-10C to 60C

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
RE46C181E16
1.112700
1.880000
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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