RE46C108S8TF

Sensor And Detector Interfaces Overview

The RE46C108S8TF is a piezoelectric horn driver and voltage regulator manufactured by Microchip Technology. It operates with a supply voltage (VDD) ranging from 6.0V to 13.8V, typically centered at 9.0V. The device features low standby supply current of 4µA when HRNEN is grounded. It provides regulated output voltages selectable via the REGSEL pin: approximately 6.0V (range 5.5V-6.5V) or 4.0V (range 3.7V-4.3V). The horn drivers support continuous output currents up to 30mA per channel. Operating temperature range is -40°C to 85°C.

Sensor And Detector Interfaces Feature Summary

• Integrated voltage regulation providing stable logic supply for low-voltage applications
• Supports self-oscillating piezoelectric horns via dedicated feedback control pin
• Low quiescent current consumption suitable for battery-powered devices
• Configurable output voltage levels through external resistor selection

Sensor And Detector Interfaces Applications

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

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity through authorized Microchip distributors. Confirm RoHS compliance status matches project requirements. Check datasheet revision history for any updates to electrical characteristics or packaging specifications before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select this component when a 9V horn driver requires an integrated low-voltage regulator. Ensure supply voltage stays within 6.0V to 13.8V limits. Verify that required regulator output voltage aligns with available 3.3V or 5V options based on REGSEL configuration. Consider thermal dissipation if continuous output current approaches maximum ratings.

Sensor And Detector Interfaces Part Context

The RE46C108 belongs to R&E International's line of piezoelectric horn drivers, now part of Microchip Technology. This specific variant integrates voltage regulation capabilities not found in basic horn driver models. It serves as a specialized solution for acoustic signaling systems requiring both high-power horn driving and low-power logic supply generation.

Sensor And Detector Interfaces Replacement Considerations

Direct replacements include other RE46C series variants with similar pinouts but verify regulator functionality. Cross-reference with Microchip's current product portfolio for updated equivalents. Ensure replacement parts maintain compatible operating voltage ranges and package dimensions.