RE46C100S8TF

Sensor And Detector Interfaces Overview

The RE46C100S8TF is a CMOS photoelectric smoke detector ASIC designed to drive self-oscillating piezoelectric horns. It features a low quiescent current of less than 100 nA and a typical driver on-resistance of 20 ohms at 9V. The device operates within a supply voltage range of 2V to 16V and supports an operating temperature range from -40°C to +85°C. It is housed in an 8-lead SOIC package with a 3.90 mm body width.

Sensor And Detector Interfaces Feature Summary

• Integrated push-pull circuitry for driving three-terminal self-oscillating piezoelectric horns
• Horn enable function allowing signal modulation via the HRNEN input pin
• Low power consumption suitable for battery-operated safety applications

Sensor And Detector Interfaces Applications

• Smoke detectors
• Carbon monoxide detectors
• Personal security products
• Electronic toys

Sensor And Detector Interfaces Procurement Notes

Verify the ordering suffix 'S8TF' corresponds to the 8-lead SOIC package, tape and reel format, and lead-free status as defined in the Microchip Product Identification System. Confirm that the specific revision matches the required datasheet version DS20002166B. Ensure compatibility with the intended PCB footprint for the narrow SOIC package.

Sensor And Detector Interfaces Selection Notes

Select this component when a dedicated horn driver for piezoelectric transducers is required. The S8 suffix indicates the SOIC package, while TF denotes tape and reel packaging. Consider the 20-ohm typical driver resistance and wide voltage range when designing the power supply and horn interface circuits.

Sensor And Detector Interfaces Part Context

The RE46C100 series includes variants such as RE46C100D8F (DFN) and RE46C100E8F (PDIP). The RE46C100S8TF specifically utilizes the Plastic Small Outline package. All variants share the same core functionality but differ in physical dimensions and thermal characteristics.

Sensor And Detector Interfaces Replacement Considerations

RE46C100D8TF

Sensor And Detector Interfaces FAQ

How is the FEED pin utilized in a two-terminal horn application?

In a two-terminal piezoelectric horn application, the FEED pin serves as the external signal input to drive the horn.

What is the maximum supply voltage for the RE46C100?

The absolute maximum supply voltage rating is 18V, though the operating range extends up to 16V.