RE46C141S16F

Sensor And Detector Interfaces Overview

The RE46C141S16F 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 5.5µA at 9V and 8µA at 12V. The device features an internal oscillator that powers detection circuitry for 100µs every 8.1 seconds in standby mode. It supports temporal horn patterns compliant with NFPA 72 standards and includes interconnect capabilities for up to 40 detectors. The component is housed in a 16-lead Wide SOIC package (SOIC-Wide-16) and functions within an operating temperature range of -25°C to +75°C.

Sensor And Detector Interfaces Feature Summary

• Integrated gain-selectable photo amplifier for infrared emitter/detector pairs
• Supports interconnection of multiple units for synchronized alarm signaling
• Includes low battery monitoring and chamber integrity testing functions
• Features ESD protection on all pins and internal power-on reset

Sensor And Detector Interfaces Applications

• Photoelectric smoke detectors requiring UL217 compliance
• Multi-unit interconnected fire alarm systems
• Battery-powered residential smoke detection devices

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S16F' against the manufacturer's current datasheet DS22177B to confirm the package type and packaging format. Ensure compatibility with the required RoHS compliance status if applicable to your manufacturing process. Cross-reference the ordering information with official Microchip channels to avoid obsolete or non-conforming variants.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring a dedicated photoelectric smoke detection solution with minimal external components. Consider the 16L W SOIC package constraints for PCB layout. Evaluate the need for interconnect functionality and temporal tone generation before finalizing the design. Ensure the external capacitor values for COSC and ROSC are calculated correctly to meet timing specifications.

Sensor And Detector Interfaces Part Context

The RE46C141 belongs to the RE46C1xx series of smoke detector ICs from Microchip Technology. This series includes variations such as the RE46C140 and RE46C144, which may differ in package options or timer modes. The RE46C141 specifically focuses on photoelectric detection with interconnect capabilities, distinguishing it from ionization-based alternatives in the same family.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes include other members of the RE46C14x series, such as the RE46C141E16F or RE46C141SW16TF, provided they match the required package and electrical characteristics. Verify pinout compatibility and functional equivalence before substitution.