| PartNumber | DS1971-F5+ | DS1972-F3+ | DS1971-F3+ |
| Description | iButtons & Accessories 256-Bit EEPROM iButton | iButtons & Accessories 1024-Bit EEPROM iButton | iButtons & Accessories 256-Bit EEPROM iButton |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | iButtons & Accessories | iButtons & Accessories | iButtons & Accessories |
| RoHS | Y | Y | Y |
| Product | iButtons | iButtons | iButtons |
| Type | - | - | - |
| Memory Type | EEPROM | EEPROM | EEPROM |
| Memory Size | 256 bit | 1 kbit | 256 bit |
| Operating Supply Voltage | 2.8 V to 6 V | 2.8 V to 5.25 V | 2.8 V to 6 V |
| Interface Type | 1-Wire | 1-Wire | 1-Wire |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Dimensions | 17.35 mm x 5.89 mm | 17.35 mm x 3.1 mm | 17.35 mm x 3.1 mm |
| Package / Case | F5 MicroCan | F3 MicroCan | F3 MicroCan |
| Packaging | Bulk | Bulk | Bulk |
| Organization | 256 x 1 | 256 x 4 | 256 x 1 |
| Series | DS1971 | DS1972 | DS1971 |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Type | iButtons & Accessories | iButtons & Accessories | iButtons & Accessories |
| Factory Pack Quantity | 1 | 100 | 1 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Tradename | iButton | iButton | iButton |
| Part # Aliases | 90-19710+F50 DS1971 | 90-19720+F30 DS1972 | 90-19710+F30 DS1971 |