RE46C141SW16TF

Sensor And Detector Interfaces Overview

The RE46C141SW16TF 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 to 8µA and alarm currents up to 3mA. The device features an internal oscillator with a nominal period of 7.9ms and supports temporal horn patterns compliant with NFPA 72 standards. Packaged in a 16-pin Wide SOIC (SOIC-Wide-16) format, it includes interconnect capabilities for linking multiple detectors. The component is UL recognized per File S24036 for use in smoke detectors complying with UL217 and UL268 specifications.

Sensor And Detector Interfaces Feature Summary

• Supports temporal horn pattern signaling for emergency evacuation compliance
• Enables interconnection of up to 40 detectors via bidirectional IO pin
• Includes low battery detection and photo chamber integrity testing functions
• Features selectable gain photo amplifier for push-button chamber testing

Sensor And Detector Interfaces Applications

• Photoelectric smoke detector systems requiring UL217/UL268 compliance
• Multi-unit interconnected fire alarm networks
• Battery-powered smoke detection devices utilizing alkaline or carbon batteries

Sensor And Detector Interfaces Procurement Notes

Verify the specific package variant when ordering, as the suffix indicates the tape and reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure design inputs align with the absolute maximum ratings provided in the datasheet to prevent device damage during operation.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring low quiescent current consumption and integrated horn driving capabilities. Consider the 16L W SOIC package dimensions for PCB layout constraints. Evaluate external component values for ROSC and COSC pins to set the desired internal clock timing and IRED pulse width according to application requirements.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C141 family of CMOS photoelectric smoke detector ASICs from Microchip Technology. It is designed to provide complete signal processing for smoke detection with minimal external components. The family includes variants with different packaging options such as PDIP and standard SOIC, catering to various manufacturing and assembly needs.

Sensor And Detector Interfaces Replacement Considerations

RE46C140SW16TF is listed as a direct substitute option.