RE46C165S16F

Sensor And Detector Interfaces Overview

The RE46C165S16F is a CMOS photoelectric smoke detector ASIC designed for standalone or interconnected fire alarm systems. It operates on a 9V supply with a typical standby current of 4 µA and supports up to 12V. The device features a gain-selectable photo amplifier, internal low battery detection, and chamber integrity testing every 43 seconds. It provides temporal horn patterns compliant with NFPA 72 and continuous tone options. Key capabilities include interconnection of up to 40 detectors via the I/O pin, push-to-test functionality, and an alarm memory feature that visually indicates prior alarms for 24 hours. The IC includes an internal power-on reset and over 2000V ESD protection.

Sensor And Detector Interfaces Feature Summary

• Supports temporal horn patterns for emergency evacuation signaling and continuous tone output modes.
• Enables system-wide synchronization by allowing interconnection of up to 40 individual detectors.
• Provides visual notification of previous local alarm conditions through a dedicated alarm memory latch.

Sensor And Detector Interfaces Applications

• Standalone photoelectric smoke detectors
• Interconnected residential fire alarm systems
• Commercial building safety monitoring

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity by checking the manufacturer's marking against official datasheet specifications. Confirm package type availability matches the required form factor. Ensure environmental compliance documentation aligns with project requirements before finalizing orders.

Sensor And Detector Interfaces Selection Notes

Select this model when temporal alarm patterns are required for regulatory compliance. Choose this variant over others in the family if extended sensitivity control times are needed rather than rapid hush functions. Verify that the specific package style meets the PCB layout constraints.

Sensor And Detector Interfaces Part Context

This component belongs to the RE46C165/6/7/8 series of low-power CMOS smoke detector integrated circuits. The series shares core architecture but varies in timer durations and output signal characteristics. This specific part number represents the standard configuration within the product line.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes within the same family include RE46C166S16F, RE46C167S16F, and RE46C168S16F. These alternatives share identical pinouts and basic functionality but differ in hush timer durations and alarm pattern timing. Cross-referencing specific timing requirements is necessary before substitution.