RE46C120E16F

Sensor And Detector Interfaces Overview

The RE46C120E16F is a CMOS ionization smoke detector ASIC designed for low-power applications. It operates on a supply voltage range of 6V to 12V with typical quiescent current consumption below 6.5uA at 9V and 9uA at 12V. The device features an internal oscillator that powers the detection circuitry for 10.5mS every 1.66 seconds in standby mode. It includes internal reverse battery protection, low battery detection, and ESD protection on all pins. The IC supports pin-selectable horn patterns, including NFPA 72 temporal tone or continuous tone, and is housed in a 16-lead PDIP package.

Sensor And Detector Interfaces Feature Summary

• Guard outputs for ion detector input with +/-0.75pA detect input current capability
• Internal reverse battery protection and low battery detection mechanisms
• Pin selectable horn pattern supporting NFPA 72 emergency evacuation signals
• Low quiescent current consumption optimized for extended battery life

Sensor And Detector Interfaces Applications

• Ionization type smoke detectors compliant with UL217 and UL268 specifications
• Security applications requiring low power consumption and reliable detection
• Emergency evacuation signaling systems utilizing NFPA 72 temporal horn patterns

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors. Confirm RoHS compliance and Pb-free packaging status prior to procurement. Ensure ordering suffixes match required package types and environmental ratings. Review datasheet revision history for any updates to electrical characteristics or application notes before finalizing purchase orders.

Sensor And Detector Interfaces Selection Notes

Select this ASIC for designs requiring ionization smoke detection with minimal standby current. Ensure external components meet leakage requirements for accurate oscillator timing. Verify compatibility with MC145017 and MC14467 if migrating from legacy designs. Consider temperature operating range limits when designing for extreme environments.

Sensor And Detector Interfaces Part Context

The RE46C120 series belongs to R&E International's line of smoke detector ASICs, now part of Microchip Technology. These devices are specifically engineered for ionization smoke detection applications, offering integrated signal processing and control functions. The E16F suffix typically denotes the 16-lead PDIP package variant with specific environmental and compliance attributes.

Sensor And Detector Interfaces Replacement Considerations

The RE46C120 is compatible with MC145017 and MC14467 designs. Verify pinout and electrical parameter alignment when substituting these legacy parts. Ensure replacement components support the same ionization chamber interface and horn drive requirements.