Summary of Ionization Smoke-Detector With Programmable Calibration
Microchip’s RE46C180 is the first ionization smoke-detector IC offering programmable calibration and programmable feature selection, plus horn synchronization and auto alarm locate, enabling one IC and PCB to support many residential and commercial detector models and simplifying manufacturing.
Parts used in the RE46C180 Ionization Smoke-Detector Project:
- RE46C180 Ionization Smoke-Detector IC
- 16-pin PDIP package (option)
- 16-pin SOIC package (option)
- Horn driver (compatible Microchip horn drivers)
- PIC microcontroller (optional, Microchip line)
- Signal-chain components (Microchip signal-chain products)
- Power-management components (Microchip power-management products)
- Carbon-monoxide detector (for interconnect operation option)
- PCB for detector circuit
- Batteries (various battery-type options supported)
Microchip Technology unveiled the RE46C180—the world’s first Ionization Smoke-Detector IC with programmable calibration and programmable feature selection, and the first with horn synchronization and auto alarm locate. This Ionization Smoke-Detector ASIC also has expanded options for implementing hush operation, and more options for interconnect operation—including with carbon-monoxide detectors. These features enable designers to develop and manufacture a broad range of residential and commercial smoke detectors using a single IC and PCB.

Smoke-Detector manufacturers also want to provide smoke-detector users with additional features. The RE46C180’s horn synchronization enables designers to easily synchronize temporal horn patterns in multiple-detector systems—a first for residential systems. Auto alarm locate enables the users of multiple-detector systems to quickly identify the smoke detector causing the alarm and assess the threat.
Microchip already offers a broad line of PIC microcontrollers, horn drivers, smoke-detector ICs, and signal-chain and power-management products,

The RE46C180 Ionization Smoke-Detector IC is available for sampling and volume production, in 16-pin PDIP and SOIC packages. Pricing starts at $0.82 each, in 10,000-unit quantities. For additional information, contact any Microchip sales representative or authorized worldwide distributor, or visit Microchip’s Web site at http://www.microchip.com/get/5CT0.
For more detail: Ionization Smoke-Detector With Programmable Calibration
- What is the RE46C180?
The RE46C180 is an ionization smoke-detector IC with programmable calibration and programmable feature selection. - Can one IC be used for multiple smoke-detector models?
Yes, programmable features allow one IC to be used for multiple models with different battery types, horn patterns, and other features. - Does the RE46C180 support horn synchronization?
Yes, it provides horn synchronization to synchronize temporal horn patterns in multiple-detector systems. - What is auto alarm locate?
Auto alarm locate enables users of multiple-detector systems to quickly identify the detector causing the alarm. - Does the IC support interconnect operation with carbon-monoxide detectors?
Yes, it includes expanded options for interconnect operation, including with carbon-monoxide detectors. - How does programmable calibration help manufacturers?
Programmable calibration reduces component counts and makes setup easier during manufacturing by eliminating manual calibration costs. - What package options are available for the RE46C180?
It is available in 16-pin PDIP and 16-pin SOIC packages. - Is the RE46C180 available for purchase and sampling?
Yes, it is available for sampling and volume production. - What is the starting price for the RE46C180?
Pricing starts at $0.82 each in 10,000-unit quantities. - Where can I get more information or purchase the RE46C180?
Contact a Microchip sales representative or authorized distributor, or visit Microchip’s website at http://www.microchip.com/get/5CT0.