RE46C165SW16TF

Sensor And Detector Interfaces Overview

The RE46C165SW16TF is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology. It operates on a supply voltage of 6V to 12V with typical quiescent current consumption of 4µA at 9V and 5.5µA at 12V. The device supports temporal horn patterns compliant with NFPA 72 standards and features an interconnect capability for up to 40 detectors. It includes alarm memory, internal low battery detection, and chamber test functions. The IC is housed in a 16-lead SOIC package and operates within a temperature range of -25°C to +75°C.

Sensor And Detector Interfaces Feature Summary

• Supports temporal horn patterns or continuous tone output modes
• Includes alarm memory feature to track previous local alarm conditions
• Features interconnect capability allowing connection of up to 40 detectors
• Provides internal low battery detection and photo chamber integrity testing

Sensor And Detector Interfaces Applications

• Photoelectric smoke detectors complying with UL217 and UL268 specifications
• Multi-unit interconnected fire alarm systems
• Battery-powered residential smoke alarms requiring reduced sensitivity timer mode

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'SW' against official documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with required operating voltage ranges and environmental temperature specifications before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring photoelectric detection with temporal alarm signaling. Consider the RE46C166 variant if continuous tone output is preferred over temporal patterns. Verify that the system design accommodates the specified interconnect limits and external component requirements for oscillator timing.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C165/6/7/8 family of low-power CMOS photoelectric smoke detector integrated circuits. The devices are designed to provide complete sensing and signaling functionality with minimal external components, targeting compliance with Underwriters Laboratory safety standards for smoke detection equipment.

Sensor And Detector Interfaces Replacement Considerations

The RE46C166SW16TF serves as a functional alternative within the same family, offering continuous tone output instead of temporal patterns while maintaining similar power characteristics and package options.