Microchip RE46C162/3 Ion, RE46C165/6/7/8 Photo Smoke Detector ICs

Microchip Technology introduced the RE46C162/3 Ion and RE46C165/6/7/8 (RE46C16X) photo smoke-detector ICs with alarm memory. RE46C16X ICs feature alarm memory, which enables the ICs to quickly determine which detector in an interconnected loop triggered an alarm. A charge-dump feature allows the alarm on all interconnected devices to stop sooner. The ICs’ low energy use enables smoke detectors with a battery life of 10 years, and an interconnect filter enables a connection to other devices, such as CO detectors.

Microchip Technology RE46C16X alarm memory block diagram

RE46C162 Ion Features

  • Pin Selectable Horn Patterns
  • Alarm Memory
  • Sensitivity Control Timer: 8 minutes
  • >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

RE46C165/6/7/8 Photo Smoke Detector Features

  • Temporal Horn Pattern
  • Alarm Memory
  • Sensitivity Control Times: 9 minutes
  • I/O Filter and Charge Dump
  • Interconnect up to 40 Detectors
  • Internal Power-on Reset
  • >2000V ESD Protection (HBM) on All Pins
  • Low Quiescent Current Consumption (<8 µA)
  • Internal Low Battery Detection and Chamber Test
  • RoHS Compliant Lead-Free Packaging

RE46C16X Packaging and Pricing

  • RE46C162: 16-pin PDIP — $0.88 each
  • RE46C163: 16-pin PDIP — $0.88 each
  • RE46C165: 16-pin PDIP, SOIC 150/300 — $0.71 each for the SOIC 150, $0.88 each for the SOIC 300 and PDIP
  • RE46C166: 16-pin PDIP, SOIC 150/300 — $0.71 each for the SOIC 150, $0.88 each for the SOIC 300 and PDIP
  • RE46C167: 16-pin PDIP, SOIC 150/300 — $0.71 each for the SOIC 150, $0.88 each for the SOIC 300 and PDIP
  • RE46C168: 16-pin PDIP, SOIC 150/300 — $0.71 each for the SOIC 150, $0.88 each for the SOIC 300 and PDIP

More info: Microchip Technology