Analog Devices Inc./Maxim Integrated DS1971-F5 iButton® is a 256-bit EEPROM memory component with a 32-byte memory size. This electronic component features a robust design suitable for demanding applications, operating within a temperature range of -40°C to 85°C. The iButton® format offers a secure and compact solution for data storage and retrieval. Its primary applications include user and product authentication across various industries. Supplied in a Bag.