RE46C101S8F

Sensor And Detector Interfaces Overview

The RE46C101S8F is a piezoelectric horn driver and LED driver circuit manufactured by Microchip Technology. It integrates feedback control, a driver circuit, and a horn enable function for self-oscillating piezoelectric horns. The device features an open-drain N-channel driver suitable for light-emitting diodes. Key electrical parameters include a supply voltage range of 6V to 16V, a typical quiescent current below 100nA, and a low driver Ron of 20Ω at 9V. It operates within a temperature range of 0°C to 50°C and is available in an 8-pin SOIC package.

Sensor And Detector Interfaces Feature Summary

• Integrates feedback control and driver circuitry for self-oscillating piezoelectric horns
• Includes an open-drain N-channel driver compatible with light-emitting diodes
• Provides a dedicated horn enable function for power management

Sensor And Detector Interfaces Applications

• Smoke detectors
• CO detectors
• Personal security products
• Electronic toys

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S8F' against official documentation to confirm the package type and RoHS compliance status. Ensure that the operating environment remains within the specified 0°C to 50°C temperature range. Confirm that the supply voltage does not exceed the absolute maximum rating of 18V to prevent permanent damage to the CMOS technology used in the device.

Sensor And Detector Interfaces Selection Notes

Select this component when designing systems requiring low quiescent current and integrated drive capabilities for piezoelectric horns. Consider the 20Ω typical driver Ron and the 6V to 16V operating voltage range for compatibility with existing power rails. Evaluate the need for the integrated LED driver if visual indicators are required alongside acoustic alarms in the target application.

Sensor And Detector Interfaces Part Context

The RE46C101 belongs to a family of specialized driver circuits designed for alarm and indicator applications. It combines acoustic and optical driving functions into a single CMOS chip, reducing the component count compared to discrete solutions. This integration supports compact designs in battery-operated devices where space and power efficiency are critical constraints.

Sensor And Detector Interfaces Replacement Considerations

Check for updated revisions or alternative packages from the manufacturer. Verify pinout compatibility before substituting with other horn drivers. Ensure any replacement meets the same voltage and current requirements for both the piezoelectric horn and LED outputs.