RE46C165SW16F

Sensor And Detector Interfaces Overview

The RE46C165SW16F is a CMOS photoelectric smoke detector ASIC designed for UL217 and UL268 compliance. It operates on a supply voltage range of 6V to 12V, with typical standby current consumption of 4µA at 9V and 5.5µA at 12V. The device features a temporal horn pattern output and supports interconnection of up to 40 detectors. Key functional parameters include an internal low battery detection threshold of 6.9V to 7.5V and sensitivity control times of 9 minutes. It provides over 2000V ESD protection (HBM) and operates within a temperature range of -25°C to +75°C.

Sensor And Detector Interfaces Feature Summary

• Supports temporal horn patterns compliant with NFPA 72 emergency evacuation signals.
• Includes alarm memory functionality to visually identify units that previously entered a local alarm condition.
• Features an interconnect pin allowing multiple detectors to be linked so all units sound upon activation.
• Incorporates internal low battery detection and chamber integrity testing performed every 43 seconds.

Sensor And Detector Interfaces Applications

• Photoelectric smoke detectors requiring UL217 and UL268 compliance
• Interconnected fire alarm systems supporting up to 40 detectors
• Battery-powered smoke alarms utilizing push-to-test functionality

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'SW16F' against the manufacturer's official datasheet DS20002251B to confirm package type and environmental compliance status. Ensure ordering documentation matches the exact part number to avoid discrepancies in lead time or packaging specifications.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring a temporal alarm tone and reduced sensitivity timer mode. The 9-minute sensitivity control period distinguishes it from other variants in the family. Verify that the external oscillator components align with the required timing specifications for the intended application environment.

Sensor And Detector Interfaces Part Context

This device belongs to the RE46C165/6/7/8 series of low-power CMOS photoelectric smoke detector ICs. It shares core architecture with the RE46C166, RE46C167, and RE46C168 models, differing primarily in sensitivity control timing and alarm output patterns. The SW16F designation indicates a wide-body SOIC-16 surface mount package.

Sensor And Detector Interfaces Replacement Considerations

RE46C166SW16F, RE46C167SW16F, RE46C168SW16F