Automatic Information
iButton Products Selection Table
Automatic Information
iButton Products Selection Table
Note: All iButtonTM products described below have a 64-bit ROM Registration Number and are 1-Wire® Network-compatible products. Related technical information, including Automatic Information application notes, technical briefs and articles, standards, and related articles, is also available.
| Device | Description | Memory | Packages |
|---|---|---|---|
| DS1920 | Temperature iButton | 16 Bits EEPROM | F5 |
| DS1921 | Thermochron iButton | 16,384 Bits temperature log + 1024 bits histogram + 768 bits alarm time stamps & duration + 4096 bits general-purpose NV RAM | F5 |
| DS1954 | Crypto iButton | Secure coprocessor with 6 Kbyte RAM and 32 Kbyte ROM | F5 |
| DS1963L | Monetary iButton | 4096 Bits NV RAM with Write Cycle Counters | F5 |
| DS1963S | SHA iButton | 4096 Bits NV RAM with Write Cycle Counters + 512 bits Secrets + SHA-1 engine | F5 |
| DS1971 | EEPROM iButton | 256+64 Bits EEPROM | F3, F5 |
| DS1973 | EEPROM iButton | 4096 Bits EEPROM | F3, F5 |
| DS1982 | Add-only iButton | 1024 Bits EPROM | F3, F5 |
| DS1982U | UniqueWare iButton | 1024 Bits EEPROM | F3, F5 |
| DS1985 | Add-only iButton | 16,384 Bits EPROM | F3, F5 |
| DS1985U | UniqueWare iButton | 16,384 Bits EPROM | F3, F5 |
| DS1986 | Add-only iButton | 65,536 Bits EPROM | F3, F5 |
| DS1986U | UniqueWare iButton | 65,536 Bits EPROM | F3, F5 |
| DS1990A | Serial Number iButton | not applicable | F3, F5 |
| DS1991 | Multikey iButton | 1344 Bits NV RAM | F5 |
| DS1992 | Memory iButton | 1024 Bits NV RAM | F5 |
| DS1993 | Memory iButton | 4096 Bits NV RAM | F5 |
| DS1994 | Memory iButton + Time | 4096 Bits NV RAM | F5 |
| DS1995 | Memory iButton | 16,384 Bits NV RAM | F5 |
| DS1996 | Memory iButton | 65,536 Bits NV RAM | F5 |
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