RE46C112E8F

Sensor And Detector Interfaces Overview

The RE46C112E8F is an ionization smoke detector IC designed for applications using ionization chambers to detect smoke. It operates with a VDD supply voltage ranging from 6V to 12V and a VCC supply voltage between 2.7V and 5.5V. The device features low quiescent current consumption, typically less than 10uA when the SELECT input is open. It provides a microprocessor A/D compatible analog output at VOUT, which represents either one-quarter of the DETECT input or VDD depending on the logic level of the SELECT pin. The IC includes guard outputs (G1, G2) to minimize surface leakage and offers ±0.75pA detect input current accuracy.

Sensor And Detector Interfaces Feature Summary

• Guard outputs for ion detector input to minimize surface leakage
• Microprocessor A/D compatible analog output
• Low quiescent current consumption

Sensor And Detector Interfaces Applications

• Ionization type smoke detectors complying with UL217 specifications

Sensor And Detector Interfaces Procurement Notes

Verify the specific package variant against the datasheet, as the E8F suffix indicates an 8L PDIP package. Confirm RoHS compliance status through official Microchip documentation before procurement. Ensure external reverse battery protection is included in the design, as the IC requires it. Validate that the selected component meets all environmental operating temperature requirements for the intended deployment.

Sensor And Detector Interfaces Selection Notes

Select this IC for designs requiring an ionization chamber interface with low power consumption. Ensure the system architecture supports the required VDD and VCC voltage ranges. Verify that the microprocessor can interface with the analog output and control the SELECT pin appropriately. Consider the 8L PDIP package constraints if through-hole mounting is necessary for the application.

Sensor And Detector Interfaces Part Context

The RE46C112 series consists of ionization smoke detector ICs manufactured by R&E International, a subsidiary of Microchip Technology. These components are specifically engineered for smoke detection systems that must adhere to Underwriters Laboratory Specification UL217. The family utilizes low power CMOS technology to ensure efficient operation within battery-powered devices.

Sensor And Detector Interfaces Replacement Considerations

Consult the official Microchip documentation for cross-reference information. No direct substitute part numbers are confirmed in the provided source material.