| Manufacturer | Part # | Datasheet | Description |

Maxim Integrated Produc...
|
DS1982 |
695Kb/24P |
1Kb Add-Only iButton Rev 8/09 |
| DS2502 |
693Kb/24P |
1Kb Add-Only Memory 2015 |
| DS2502 |
1Mb/24P |
1Kb Add-Only Memory Rev 12/11 |
| DS1985 |
696Kb/26P |
16Kb Add-Only iButton Rev 8/09 |

Dallas Semiconductor
|
DS1985 |
440Kb/25P |
16-kbit Add-Only iButton |
| DS1986 |
548Kb/27P |
64-kbits Add-Only iButton? |
| DS1982 |
444Kb/23P |
1-kbit Add-Only iButton |
| DS1961S |
360Kb/36P |
1kb Protected EEPROM iButton With SHA-1 Engine |

Maxim Integrated Produc...
|
DS1961S |
364Kb/36P |
1kb Protected EEPROM iButton With SHA-1 Engine 092302 |
| DS2505 |
603Kb/24P |
16Kb Add-Only Memory 071107 |
| DS2506 |
898Kb/25P |
64Kb Add-Only Memory 062100 |

Dallas Semiconductor
|
DS2502-UN |
46Kb/3P |
UniqueWare Add-Only Memory |

Maxim Integrated Produc...
|
DS1992 |
172Kb/17P |
1Kb/4Kb Memory iButton 1024 bits of Read/Write Nonvolatile Rev 4/11 |

Dallas Semiconductor
|
DS2502 |
451Kb/3P |
1 kbit Add-Only Memory |
| DS2506 |
558Kb/25P |
64-kbit Add-Only Memory |
| DS2502 |
737Kb/22P |
1 kbit Add-Only Memory |
| DS2505 |
800Kb/24P |
16-kbit Add-Only Memory |
| DS2505 |
525Kb/24P |
16-kbit Add-Only Memory |

ON Semiconductor
|
N21C21A |
454Kb/16P |
1 Kb 1-Wire EPROM Add-Only Memory June, 2020 ??Rev. 1 |

Dallas Semiconductor
|
DS1963S |
349Kb/37P |
SHA iButton |