RE46C144S16TF

Sensor And Detector Interfaces Overview

The RE46C144S16TF is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology, housed in a 16-lead Wide SOIC (SOIC-Wide-16) package. It operates within a supply voltage range of 5V to 12V and features low quiescent current consumption, typically 4µA at 9V and 5.5µA at 12V. The device supports interconnection of up to 40 detectors and includes an internal 10-minute timer for sensitivity control. It provides a 75% duty cycle horn pattern and incorporates internal low battery and chamber test functions. The IC is UL recognized per File S24036.

Sensor And Detector Interfaces Feature Summary

• Integrated gain-selectable photo amplifier with infrared emitter/detector pair support
• Bidirectional interconnect pin enabling multi-detector system synchronization
• Internal diagnostic modes for push-button testing and chamber integrity verification
• UL recognition for compliance with UL217 and UL268 specifications

Sensor And Detector Interfaces Applications

• Photoelectric smoke detection systems
• Multi-unit interconnected fire alarm networks
• Battery-powered residential smoke alarms

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S16TF' corresponds to the 16-lead Wide SOIC package in tape and reel format. Confirm that the ordering information matches the manufacturer's Product Identification System documentation. Ensure compatibility with required environmental operating temperatures ranging from -25°C to +75°C.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring a dedicated ASIC solution for photoelectric smoke sensing. Consider the 16-lead Wide SOIC package for surface mount assembly requirements. Evaluate the need for the 10-minute timer mode if reduced sensitivity periods are necessary during specific operational windows.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C144 family of CMOS photoelectric smoke detector ICs. Variants differ primarily by packaging options such as PDIP or Narrow/Wide SOIC, and delivery formats including tube or tape and reel. The core functionality remains consistent across the family, providing essential smoke detection logic and horn driving capabilities.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes include other RE46C144 variants with different packaging, such as RE46C144SW16F (tube) or RE46C144S16TF (reel). Verify pinout compatibility and package dimensions when transitioning between narrow and wide SOIC versions.