RE46C144E16F

Sensor And Detector Interfaces Overview

The RE46C144E16F is a CMOS photoelectric smoke detector ASIC designed for standalone or interconnected fire alarm systems. It integrates a gain-selectable photo amplifier, internal oscillator, and horn driver to minimize external component count. The device operates on a supply voltage ranging from 6V to 12V with typical standby currents of 4µA at 9V and 5.5µA at 12V. It features an interconnect pin supporting up to 40 detectors and includes a 10-minute timer mode for sensitivity adjustment. The unit provides UL recognition under File S24036 and operates within a temperature range of -25°C to +75°C.

Sensor And Detector Interfaces Feature Summary

• Integrated photoelectric detection circuitry with selectable high and normal gain modes for chamber testing and standby operation.
• Bidirectional interconnect capability allowing synchronization of multiple units across a single system.
• Internal diagnostic functions including low battery monitoring and periodic smoke chamber integrity checks.
• Configurable 10-minute timer mode enabling temporary reduction in detection sensitivity via external reference input.

Sensor And Detector Interfaces Applications

• Standalone photoelectric smoke alarms
• Interconnected residential fire alarm systems
• Commercial smoke detection panels

Sensor And Detector Interfaces Procurement Notes

Verify the specific package suffix 'E' corresponds to the 16-lead Plastic Dual In-Line (PDIP) configuration required for the design. Confirm RoHS compliance status and lead-free marking requirements against current Microchip specifications before finalizing orders.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring a complete photoelectric sensing solution with minimal external parts. Ensure the power supply remains stable between 6V and 12V. Verify that the PDIP package fits the target PCB footprint and that the operating temperature range meets environmental constraints.

Sensor And Detector Interfaces Part Context

This part belongs to the RE46C144 family of CMOS photoelectric smoke detector ICs. Variants include SOIC narrow and wide packages, as well as tape and reel options. The E16F designation specifically identifies the 16-pin PDIP version compliant with standard through-hole assembly processes.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes within the same family include RE46C144S16F (SOIC Narrow) and RE46C144SW16F (SOIC Wide). These share identical electrical characteristics but differ in physical package dimensions and mounting style.