RE46C126E16F

Sensor And Detector Interfaces Overview

The RE46C126E16F is a CMOS ionization smoke detector ASIC manufactured by Microchip Technology. It operates on a supply voltage range of 6V to 12V with typical quiescent current consumption below 6.5uA at 9V. The device features an internal oscillator that powers the detection circuitry for 10.5mS every 1.67 seconds in standby mode. It includes interconnect capability for up to 40 detectors, reverse battery protection, and low battery detection. The component is available in a 16-pin PDIP package and is recognized by Underwriters Laboratories for use in smoke detectors complying with UL217 and UL268 specifications.

Sensor And Detector Interfaces Feature Summary

• Guard outputs for ion detector input with +/-0.75pA detect input current
• Internal reverse battery protection and low battery detection
• Interconnect capability allowing connection of up to 40 detectors
• Compatible with MC14468

Sensor And Detector Interfaces Applications

• Ionization type smoke detectors
• Security applications requiring low power monitoring
• Systems compliant with UL217 and UL268 standards

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix to confirm the package type and packaging format. The E16F suffix typically indicates a 16-pin PDIP package in standard or RoHS-compliant lead-free packaging. Confirm humidity sensitivity levels and storage conditions prior to assembly. Ensure the procurement source provides valid traceability documentation for UL recognition requirements.

Sensor And Detector Interfaces Selection Notes

Select this component for designs requiring a dedicated ionization smoke detection solution with minimal external components. The low quiescent current makes it suitable for battery-powered applications. Consider the operating temperature range of -10°C to +60°C when defining environmental constraints. Verify compatibility with existing horn drivers and LED circuits based on the output drive capabilities specified in the datasheet.

Sensor And Detector Interfaces Part Context

The RE46C126 belongs to the RE46C series of smoke detector integrated circuits from R&E International, a subsidiary of Microchip Technology. This series includes various configurations for ionization and photoelectric detection types. The RE46C126 specifically targets ionization chambers with interconnect functionality, distinguishing it from non-interconnect variants within the same product family.

Sensor And Detector Interfaces Replacement Considerations

The datasheet notes compatibility with the MC14468. Engineers should verify pin-to-pin electrical characteristics and timing parameters before substituting other devices. No other direct replacement part numbers are explicitly listed in the provided documentation.