DS2401A+

DS2401 Silicon Serial Number

Analog Devices DS2401 Silicon Serial Number is a low-cost, electronic registration number ID Chip that provides an absolutely unique identity that can be determined with a minimal electronic interface (typically, a single port pin of a microcontroller). The DS2401 consists of a factory-lasered, 64-bit ROM that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire^® protocol that requires only a single data lead and a ground return. Power for reading and writing the device is derived from the data line itself with no need for an external power source. The DS2401 is offered in TO-92, SOT-223, and TSOC packages, providing a compact enclosure that allows standard assembly equipment to handle the device easily.