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Description

The RE46C162/163 devices are low-power, CMOS ionization type, smoke detector ICs. With few external components, these circuits will provide all the required features for an ionization type smoke detector.

An internal oscillator strobes power to the smoke detection circuitry for 10.5 ms every 1.67 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 so 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.

Features

? Pin Selectable Horn Patterns

? Alarm Memory

? Sensitivity Control Timer:

- 8 minute Timer for RE46C162

- 1 minute Timer for RE46C163

? >1500V ESD Protection (HBM) on All Pins

? Guard Outputs for Ion Detector Input

? ±0.75 pA Detect Input Current

? Internal Reverse Battery Protection

? Low Quiescent Current Consumption (<6.5 μA)

? I/O Filter and Charge Dump

? Internal Low Battery Detection

? Power-up Low Battery Test

? Interconnect up to 66 Detectors

? RoHS Compliant, Lead Free Packaging