| Manufacturer | Part Number | Description |
|---|---|---|
Dallas Semiconductor
| DS1985 | 16-kbit Add-Only iButton |
Maxim Integrated (now Analog Devices)
| DS1985 | 16Kb Add-Only iButton |
|
Dallas Semiconductor
| DS1985U | (DS1982U - DS1986U) Uniqueware Ibutton |
