RE46C141S16TF

Sensor And Detector Interfaces Overview

The RE46C141S16TF is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology. It operates on a supply voltage ranging from 6V to 12V, with typical standby current consumption of 5.5µA at 9V and 8µA at 12V. The device features an internal oscillator that powers the 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 Narrow SOIC package (SOIC-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 designed for use with infrared emitter/detector pairs.
• Supports interconnection of multiple units so that activation of one triggers alarms across all connected detectors.
• Includes internal diagnostics for low battery conditions and photo chamber integrity checks performed periodically during standby.
• Features a high-gain mode accessible via a push-button test input to simulate smoke conditions for verification.

Sensor And Detector Interfaces Applications

• Photoelectric smoke detection systems requiring UL217 and UL268 compliance.
• Multi-unit interconnected fire alarm networks utilizing the temporal horn pattern.
• Battery-powered smoke detectors utilizing alkaline or carbon batteries.

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S16' corresponds to the 16-lead Narrow SOIC package configuration required for your design. Confirm RoHS compliance status if lead-free packaging is mandated for your assembly process. Ensure the ordering quantity aligns with the manufacturer's standard packaging requirements for this specific variant.

Sensor And Detector Interfaces Selection Notes

Select this component when a photoelectric sensing method is preferred over ionization. The RE46C141 is suitable for designs requiring low quiescent current to extend battery life. Consider the 16L N SOIC package constraints regarding board space and thermal management. Verify that the external component values for ROSC and COSC meet the timing specifications for your application.

Sensor And Detector Interfaces Part Context

The RE46C141 belongs to the RE46C series of smoke detector integrated circuits from Microchip Technology. This series includes various configurations for photoelectric and ionization sensing technologies. The RE46C141 specifically addresses photoelectric applications with interconnect functionality, distinguishing it from non-interconnect variants like the RE46C144.

Sensor And Detector Interfaces Replacement Considerations

The RE46C141SW16TF is a compatible variant offering the same functional specifications but packaged in a Wide SOIC format instead of Narrow SOIC. Designers must adjust footprint layouts accordingly when substituting between these package types.