RE46C166E16F

Sensor And Detector Interfaces Overview

The RE46C166E16F is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology. It operates on a supply voltage range of 6V to 12V, with typical standby currents of 4µA at 9V and 5.5µA at 12V. The device features an internal oscillator with a nominal period of 10ms and supports interconnection of up to 40 detectors. It provides temporal horn patterns compliant with NFPA 72 standards and includes alarm memory functionality. The IC incorporates low battery detection, chamber integrity testing, and I/O filtering for robust system integration.

Sensor And Detector Interfaces Feature Summary

• Supports temporal horn patterns compliant with NFPA 72 emergency evacuation signals
• Includes alarm memory feature to indicate previous local alarm conditions
• Enables interconnection of up to 40 detectors via bidirectional I/O pin
• Features internal low battery detection and photo chamber integrity tests

Sensor And Detector Interfaces Applications

• Photoelectric smoke detectors complying with UL217 specifications
• Multi-unit interconnected fire alarm systems
• Battery-powered residential smoke alarms requiring low quiescent current

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix against official datasheets to confirm package type and temperature range. Ensure compatibility with required sensitivity control times and timer modes before procurement. Confirm RoHS compliance status through manufacturer documentation.

Sensor And Detector Interfaces Selection Notes

Select this model for applications requiring temporal alarm patterns and alarm memory. Compare with RE46C165/7 variants if continuous tone or different sensitivity timers are needed. Verify power supply requirements align with the 6V to 12V operating range.

Sensor And Detector Interfaces Part Context

This component belongs to the RE46C165/6/7/8 family of CMOS photoelectric smoke detector ASICs. It shares core architecture with sibling models but differs in alarm pattern timing and sensitivity control durations. The E16F suffix typically denotes a specific package and temperature variant within this series.

Sensor And Detector Interfaces Replacement Considerations

RE46C165E16F, RE46C167E16F, RE46C168E16F. Substitutes may require adjustments to external components due to differences in alarm pattern timing and sensitivity control periods.