Maxim > Products > Part Number Search Part Number Search Maxim Product Naming Conventions DS1961S 1Kb Protected EEPROM iButton with SHA-1 Engine DS1963L 4kbit Monetary iButton DS1963S SHA iButton DS1965S-1-F3 DS1965S-1-F5 DS1965S-4-F3 DS1965S-4-F5 DS1965S-F5