The Microchip RE46C141SW16TF: A Comprehensive Solution for Advanced Smoke Detection Systems
The Microchip RE46C141SW16TF represents a highly integrated, CMOS-based integrated circuit designed specifically for photoelectric smoke detector applications. This sophisticated component serves as the central brain of a modern smoke alarm, providing not only core smoke detection functionality but also advanced features like interconnect capability and a versatile timer mode, which significantly enhance system safety and usability.
At its core, the RE46C141 is engineered to interface with an external infrared photoelectric chamber. It internally contains a precision Ionization Detector Emulator, which allows a single photoelectric-type device to meet the regulatory requirements typically associated with ionization-type detectors. This simplifies design and reduces component count. The IC manages all the critical functions autonomously: it powers the LED for the detection chamber, monitors the received signal, and makes the ultimate decision to trigger the alarm.
A key feature of this IC is its interconnect functionality. This allows up to 40 compatible devices to be wired together so that if one unit detects smoke, all interconnected units will sound their alarms simultaneously. This provides whole-home safety coverage, ensuring occupants are alerted no matter where they are in the building when a hazard originates.
Furthermore, the integrated Timer Mode offers a valuable user convenience feature. This mode can be activated to temporarily silence nuisance alarms (e.g., from cooking smoke or shower steam) for approximately 10 minutes. After this period, the detector automatically resets to its full monitoring state, ensuring protection is never compromised for an extended time. The device also features a built-in hysteresis function to prevent alarm oscillation and a low-battery warning function that chirps the horn approximately once a minute when the battery voltage drops below a predetermined threshold.
Housed in a compact 16-pin narrow-body SOIC package, the RE46C141 is designed for efficient manufacturing and reliable long-term operation. Its ultra-low standby current is critical for maximizing battery life in standalone units, often allowing for a operational life of up to 10 years from a single battery.
ICGOOODFIND: The Microchip RE46C141SW16TF is an exceptionally capable and reliable smoke detector IC that stands out for its high level of integration, compliance-friendly design, and critical advanced features. Its interconnect capability and practical timer mode make it an ideal choice for developers creating sophisticated, user-friendly, and life-saving photoelectric smoke detection systems for residential and commercial properties.
Keywords: Smoke Detector IC, Interconnect Functionality, Photoelectric Detection, Timer Mode, Low Battery Warning.
