| PartNumber | 25LC640AT-E/SN | 25LC640AT-E/MNY | 25LC640AT-E/MS |
| Description | EEPROM 64K 8K X 8 25V SER EE EXT | EEPROM 64K 8K X 8 2.5V SER EE EXT | EEPROM 64K 8K X 8 25V SER EE EXT |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EEPROM | EEPROM | EEPROM |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOIC-8 | TDFN-8 | MSOP-8 |
| Memory Size | 64 kbit | 64 kbit | 64 kbit |
| Organization | 8 k x 8 | 8 k x 8 | 8 k x 8 |
| Interface Type | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI |
| Access Time | 100 ns | 100 ns | 100 ns |
| Data Retention | 200 Year | 200 Year | 200 Year |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 10 MHz |
| Supply Current Max | 5 mA | 5 mA | 5 mA |
| Supply Voltage Min | 2.5 V | 2.5 V | 2.5 V |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 125 C | + 125 C | + 125 C |
| Packaging | Reel | Reel | Reel |
| Height | 1.25 mm (Min) | 0.73 mm | 0.85 mm |
| Length | 4.9 mm | 2 mm | 3 mm |
| Width | 3.9 mm | 3 mm | 3 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Moisture Sensitive | Yes | Yes | - |
| Operating Supply Current | 5 mA | 5 mA | 5 mA |
| Operating Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Product Type | EEPROM | EEPROM | EEPROM |
| Factory Pack Quantity | 3300 | 3300 | 2500 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Unit Weight | 0.005044 oz | 0.001764 oz | 0.004938 oz |