Description
The RE46C190 is a low power, low voltage CMOS photoelectric type smoke detector IC. With minimal external components, this circuit will provide all the required features for a photoelectric-type smoke detector.

Features
• Two AA Battery Operation
• Internal Power On Reset
• Low Quiescent Current Consumption
• Available in 16L N SOIC
• Local Alarm Memory
• Interconnect up to 40 Detectors
• 9 Minute Timer for Sensitivity Control
• Temporal or Continuous Horn Pattern
• Internal Low Battery and Chamber Test
• All Internal Oscillator
• Internal Infrared Emitter Diode (IRED) driver
• Adjustable IRED Drive current
• Adjustable Hush Sensitivity
• 2% Low Battery Set Point