RE46C144SW16TF

Sensor And Detector Interfaces Overview

The RE46C144SW16TF is a CMOS photoelectric smoke detector ASIC manufactured by Microchip Technology in a 16-lead Wide SOIC package. It operates within a supply voltage range of 6 V to 12 V, with typical standby current consumption of 5.5 µA at 12 V and 4 µA at 9 V. The device features an internal oscillator with a nominal period of 10 ms and supports interconnection of up to 40 detectors. It includes a 10-minute timer mode for sensitivity control and provides UL recognition per File S24036.

Sensor And Detector Interfaces Feature Summary

• Integrated low-power CMOS architecture designed specifically for photoelectric smoke detection applications
• Supports system interconnection allowing multiple detectors to be linked for synchronized alarm signaling
• Includes internal diagnostic functions for low battery monitoring and chamber integrity testing

Sensor And Detector Interfaces Applications

• Photoelectric smoke detector systems requiring minimal external components
• Multi-unit interconnected fire alarm networks
• Battery-powered smoke detection devices utilizing alkaline or carbon batteries

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix 'TF' corresponds to the tape and reel packaging format as defined in the product identification system. Confirm that the Wide SOIC (7.50 mm body) package variant matches the intended PCB layout requirements. Ensure compliance with RoHS directives and check for any recent Product Change Notifications affecting manufacturing or sourcing.

Sensor And Detector Interfaces Selection Notes

Select this component when designing a photoelectric smoke detector that requires interconnect capability and a programmable timer mode. Consider the 16-lead Wide SOIC package dimensions for board space constraints. Evaluate the need for high-gain capacitor settings for push-to-test functionality and ensure the power supply design accommodates the specified voltage range and current consumption profiles.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C144 family of CMOS photoelectric smoke detector ICs from Microchip Technology. The SW16 suffix indicates the Wide SOIC package option, while the TF suffix denotes tape and reel packaging. This family is recognized by Underwriters Laboratories for use in smoke detectors complying with UL217 and UL268 specifications.

Sensor And Detector Interfaces Replacement Considerations

RE46C144SW16F is a direct replacement offering the same functional specifications but packaged in tubes instead of tape and reel.