RE46C141SW16F

Sensor And Detector Interfaces Overview

The RE46C141SW16F is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology. It operates on a supply voltage of 6V to 12V, with typical standby currents of 5.5µA at 12V and 4µA at 9V. The device features an internal oscillator that powers detection circuitry for 100µs every 8.1 seconds in standby mode. It supports interconnection of up to 40 detectors via the IO pin and generates a temporal horn pattern compliant with NFPA 72 standards. The component is housed in a 16-lead Wide SOIC package.

Sensor And Detector Interfaces Feature Summary

• Supports interconnection of multiple detectors for synchronized alarm signaling
• Generates temporal horn patterns for emergency evacuation signals
• Includes low battery and chamber integrity diagnostic testing
• Features selectable gain modes for push-button chamber testing

Sensor And Detector Interfaces Applications

• Photoelectric smoke detectors complying with UL217 and UL268 specifications
• Multi-unit interconnected fire alarm systems
• Residential and commercial smoke sensing devices

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'W' indicates the Wide SOIC package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure ordering quantities align with standard packaging configurations provided by the supplier.

Sensor And Detector Interfaces Selection Notes

Select this model for applications requiring wide SOIC surface mount integration. Verify external component values for ROSC and COSC pins to ensure correct oscillator timing. Check compatibility with infrared emitter/detector pairs and piezoelectric transducers required for the design.

Sensor And Detector Interfaces Part Context

This component belongs to the RE46C141 family of CMOS photoelectric smoke detector ICs. It provides essential signal processing and control functions for optical smoke detection systems. The device integrates amplification, timing, and alarm output drivers into a single monolithic circuit.

Sensor And Detector Interfaces Replacement Considerations

RE46C140SW16TF is listed as a direct replacement option by the manufacturer.