| Part Number | Description | Security Features | Package/Pins |
| MAX66040E | ISO/IEC 14443 Type B-Compliant Secure Memory | SHA-1 ,Write-Only Secrets | See Data Sheet |
| MAX66040K | ISO/IEC 14443 Type B-Compliant Secure Memory | SHA-1 ,Write-Only Secrets | See Data Sheet |
| MAX66140E | ISO 15693-Compliant Secure Memory | SHA-1 ,Write-Only Secrets | See Data Sheet |
| MAX66140K | ISO 15693-Compliant Secure Memory | SHA-1 ,Write-Only Secrets | See Data Sheet |
| MAX66240 | Secure Authenticator with ISO 15693, SHA-256, and 4Kb User EEPROM | SHA-256 ,Write-Only Secrets | SOIC(N)/8 |
