RE46C143S16F

Sensor And Detector Interfaces Overview

The RE46C143S16F is a CMOS photoelectric smoke detector ASIC designed for minimal external component requirements. It operates on a supply voltage range of 5V to 12V with typical standby currents of 4µA at 9V and 5.5µA at 12V. The device features an internal oscillator that powers detection circuitry for 100µs every 8.1 seconds, increasing frequency upon smoke sensing. It includes a gain-selectable photo amplifier, low battery monitoring, chamber integrity checks, and interconnect capability for up to 40 detectors. The IC supports UL217 and UL268 compliance and utilizes a 75% duty cycle horn pattern.

Sensor And Detector Interfaces Feature Summary

• Integrated gain-selectable photo amplifier for infrared emitter/detector pairs
• Interconnect pin supporting multi-detector systems with digital filtering
• Internal diagnostic mode for calibration and sensitivity testing
• Low battery and chamber integrity verification in standby

Sensor And Detector Interfaces Applications

• Photoelectric smoke detectors compliant with UL217 and UL268 standards
• Multi-unit interconnected fire alarm systems
• Battery-powered smoke detection devices requiring low quiescent current

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S16F' against the manufacturer's official documentation to confirm package type and environmental compliance status. Ensure ordering quantities align with standard packaging configurations provided by authorized distributors. Cross-reference the datasheet revision date to confirm technical specifications match the production batch.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring a complete photoelectric detection solution with minimal external parts. Consider the operating temperature range of -25°C to +75°C and the 16-pin SOIC package availability. Evaluate the need for interconnect functionality and low battery indication features before finalizing the design.

Sensor And Detector Interfaces Part Context

The RE46C143 belongs to the Microchip Technology RE46C series of smoke detector integrated circuits. This family includes variants for both photoelectric and ionization detection technologies. The RE46C143 specifically addresses photoelectric applications with added interconnect capabilities, distinguishing it from basic standalone detector ICs within the same product line.

Sensor And Detector Interfaces Replacement Considerations

The datasheet notes compatibility with the Motorola MC145010. Verify pinout and electrical characteristics before substituting. No other direct replacement part numbers are explicitly confirmed in the provided documentation.