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| PartNumber | MAX66020K-000AA+ | MAX66000K-000AA+ | MAX66000E-000AA+ |
| Description | RFID Transponders ISO/IEC 14443 Type B Comp 1Kb Mem Fo | RFID Transponders RFID 14443 ROM ID LF TSTD | RFID Transponders RFID ISO CARD 14443 ROM ID LF |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | RFID Transponders, Tags | RFID Transponders, Tags | RFID Transponders, Tags |
| Series | iButtonR | iButtonR | - |
| Packaging | Reel | Reel | - |
| Operating Temperature Range | - 25 C to + 50 C | - 25 C to + 50 C | - |
| Frequency | 13.56MHz | 13.56MHz | - |
| Technology | Passive | Passive | - |
| Operating Temperature | -25°C ~ 50°C | -25°C ~ 50°C | - |
| Style | Key Fob | Key Fob | - |
| Size Dimension | 54.00mm x 28.00mm x 1.60mm | 54.00mm x 28.00mm x 1.60mm | - |
| Memory Size | 1 kbit | 64 bit | - |
| Memory Type | Read/Write | Read/Write | - |
| Standards | ISO 14443 | ISO 14443 | - |
| Writable Memory | 1kB (User) | - | - |
| Maximum Operating Temperature | + 50 C | + 50 C | - |
| Minimum Operating Temperature | - 25 C | - 25 C | - |
| Operating Frequency | 13.56 MHz | 13.56 MHz | - |
| Part # Aliases | MAX66020 | MAX66000 | - |
| Package Case | Key Fob | Key Fob | - |