Analog Devices Inc./Maxim Integrated DS2411R+U

DS2411R+U gives a host a unique electronic identity through a single 1-Wire data line. Its read-only registration number contains an 8-bit family code, a 48-bit serial number, and an 8-bit CRC. Unlike the DS2411A version, the DS2411 requires an external VCC supply. A microcontroller can read the identifier for board, module, or peripheral identification.

The product record names TO-236-3, SC-59, SOT-23-3. Analog Devices lists DS2411R+U as a three-pin SOT-23 model. Match the manufacturer's package drawing and top-view pin configuration to the PCB footprint before assembly.

Layout checks

• Confirm pin 1 orientation on the top-view drawing.
• Route I/O to a 1-Wire-capable host port with a suitable pull-up.
• Connect VCC and GND per the device pinout.

Package image is pending: the registered JPG is currently unavailable on the production website. Verify the footprint against the manufacturer's controlled drawing, not this placeholder image path.

For the three-pin SOT-23 DS2411 package, the manufacturer's data sheet assigns:

This VCC assignment does not apply to the DS2411A variant, whose corresponding pin is N.C.; confirm the exact device marking and drawing.

Electrical limits and timing depend on the test conditions in the manufacturer's data sheet. Verify the full specification before release to production.

Choose a replacement only after checking the exact ordering code, pinout, power method, 1-Wire timing, temperature grade, and package. The related DS2411A has different electrical parameters and does not use an external VCC input in the same way; it is not an unconditional pin-for-pin substitute in an existing DS2411R+U circuit. Other DS2411 package or shipment variants also require mechanical and procurement checks.

No unverified LCDChip alternative-product link is asserted here.

Analog Devices lists DS2411R+U within its DS2411 product family; the design originated in the Maxim Integrated portfolio. Refer to the current Analog Devices DS2411 product documentation, data sheet, package drawing, and notices for controlled technical information.

Verify the full ordering code, device marking, package, traceability documents, and electrical behavior against the manufacturer's specifications. The ROM's uniqueness aids identification but does not by itself prove supply-chain authenticity or provide cryptographic security.

Confirm the exact DS2411R+U ordering information, supply and pull-up design, timing margins, pin orientation, package land pattern, and applicable manufacturer notices before manufacturing. The package JPG referenced above is not yet available on this site and must be supplied and visually checked before publication.