RE46C122E16F

Sensor And Detector Interfaces Overview

The RE46C122E16F is a CMOS ionization smoke detector ASIC designed for standalone or interconnected fire alarm systems. It operates on a supply voltage range of 6V to 12V, with typical standby current consumption of 9uA at 9V. The device features an internal oscillator that powers detection circuitry for 10.5mS every 1.67 seconds. It supports temporal horn patterns compliant with NFPA 72 and includes interconnect capability for up to 40 units. An internal 10-minute timer allows for sensitivity reduction via an external button. The component is housed in a 16-pin PDIP package and functions within an operating temperature range of -10°C to +60°C.

Sensor And Detector Interfaces Feature Summary

• Internal low battery detection with power-up test capability
• Interconnect pin supporting multi-unit synchronization
• Guard outputs for ion detector input protection
• Internal reverse battery protection

Sensor And Detector Interfaces Applications

• Ionization type smoke detectors
• Multi-unit interconnected fire alarm systems
• Security applications requiring low-power sensing

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix E16F against the manufacturer's official documentation to confirm packaging and material compliance details. Ensure the ordering information matches the required RoHS status and lead time requirements directly from the supplier. Confirm availability through authorized Microchip Technology distributors.

Sensor And Detector Interfaces Selection Notes

Select this component for designs requiring ionization detection with minimal standby power. Verify compatibility with Allegro A5367 if used in the system. Ensure the PCB layout accommodates the 16L PDIP footprint and routes sensitive analog traces away from high-current drivers like pin 7.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C series of smoke detector ICs manufactured by R&E International, a subsidiary of Microchip Technology. These devices are recognized by Underwriters Laboratories (UL) per file S24036 for use in smoke detectors complying with UL217 and UL268 specifications.

Sensor And Detector Interfaces Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the RE46C family. Verify functional equivalence regarding interconnect limits and timer modes before substitution.