| PartNumber | 25AA640AT-I/MS | 25AA640AT-I/MNY | 25AA640AT-I/MS16KVAO |
| Description | EEPROM 64K 8K X 8 18V SER EE IND | EEPROM 64K 8K X 8 1.8V SER EE IND | 64K SPI SERIAL EEPROM |
| Manufacturer | Microchip | Microchip | - |
| Product Category | EEPROM | EEPROM | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | MSOP-8 | TDFN-8 | - |
| Memory Size | 64 kbit | 64 kbit | - |
| Organization | 8 k x 8 | 8 k x 8 | - |
| Interface Type | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI | - |
| Access Time | 160 ns | 100 ns | - |
| Data Retention | 200 Year | 200 Year | - |
| Maximum Clock Frequency | 10 MHz | 10 MHz | - |
| Supply Current Max | 5 mA | 5 mA | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Reel | Reel | - |
| Brand | Microchip Technology | Microchip Technology | - |
| Operating Supply Current | 5 mA | 5 mA | - |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | - |
| Product Type | EEPROM | EEPROM | - |
| Factory Pack Quantity | 2500 | 3300 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.004938 oz | 0.001764 oz | - |
| Moisture Sensitive | - | Yes | - |