RE46C168SW16F

Sensor And Detector Interfaces Overview

The RE46C168SW16F is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology. It operates on a supply voltage of 5V to 12V, with typical quiescent current consumption of 5.5 µA at 12V and 4 µA at 9V. The device supports temporal horn patterns or continuous tones 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-Wide package 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 feature to indicate 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 specifications
• Smoke detectors complying with UL268 specifications
• Multi-unit interconnected fire alarm systems

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'SW16F' against official documentation to confirm package type and compliance status. Confirm availability as distribution channels may list this component as discontinued or limited stock. Ensure sourcing from authorized distributors to guarantee authenticity and traceability.

Sensor And Detector Interfaces Selection Notes

Select the RE46C168SW16F when a photoelectric sensing method with timer mode and alarm memory is required. This model provides a shorter sensitivity control time compared to the RE46C165/6 variants. Ensure the application design accommodates the SOIC-Wide-16 surface mount package constraints.

Sensor And Detector Interfaces Part Context

This component belongs to the RE46C165/6/7/8 family of low-power CMOS photoelectric smoke detector ICs. The RE46C168 variant specifically offers a 1.2-minute sensitivity control time, distinguishing it from the 9-minute duration found in the RE46C165/6 models. All members share similar core functionalities including interconnect and alarm memory.

Sensor And Detector Interfaces Replacement Considerations

The RE46C167SW16F is a related part within the same family offering identical features but with different sensitivity timing characteristics.