RE46C128E16F

Sensor And Detector Interfaces Overview

The RE46C128E16F is a CMOS ionization smoke detector ASIC designed for standalone or interconnected alarm systems. It operates on a supply voltage range of 6V to 12V with typical standby current consumption of 5µA to 9µA. The device features an internal oscillator that powers detection circuitry for 10.5mS every 1.67 seconds, supporting NFPA 72 temporal horn patterns. It includes interconnect capability for up to 40 detectors and UL recognition per File S24036. Available in 16L PDIP packaging, it supports operating temperatures from -10°C to +60°C.

Sensor And Detector Interfaces Feature Summary

• Internal low battery detection with power-up test capability
• Interconnect pin allows synchronization across multiple units
• Guard outputs minimize surface leakage for ion chamber inputs
• ESD protection exceeding 1500V on all pins

Sensor And Detector Interfaces Applications

• Ionization smoke detectors compliant with UL217 and UL268
• 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 datasheet to confirm package type and RoHS compliance status. Ensure ordering documentation matches the exact part number to avoid discrepancies in lead times or packaging quantities. Confirm environmental certifications such as RoHS if required by local regulations before finalizing procurement.

Sensor And Detector Interfaces Selection Notes

Select this component for designs requiring ionization detection with minimal standby power. Verify external component values for RBIAS and OSCAP to ensure accurate oscillator timing. Check compatibility with Allegro A5364 drivers if horn output requirements exceed the IC's direct drive capabilities. Ensure PCB layout isolates high-voltage feed lines from sensitive analog inputs.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C1xx series of smoke detector ASICs from Microchip Technology. It specifically targets ionization chambers, distinguishing it from photoelectric variants like the RE46C144. The E16F suffix indicates a 16-lead PDIP package variant within this family.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes include other RE46C1xx series parts with matching detection types. Verify pinout compatibility when replacing with similar ASICs. Ensure replacement components maintain UL recognition requirements for the final assembly.