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| PartNumber | 25LC040A-E/P | 25LC040A-E/MS | 25LC040A |
| Description | EEPROM 4K 512X8 2.5V SER EE EXT | EEPROM 4K 512X8 2.5V SER EE EXT | |
| Manufacturer | Microchip | Microchip | Microchip Technology |
| Product Category | EEPROM | EEPROM | Memory |
| RoHS | Y | Y | - |
| Mounting Style | Through Hole | SMD/SMT | SMD/SMT |
| Package / Case | PDIP-8 | MSOP-8 | - |
| Memory Size | 4 kbit | 4 kbit | 4K (512 x 8) |
| Organization | 512 x 8 | 512 x 8 | 512 x 8 |
| Interface Type | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI | Serial 4-Wire SDI SPI |
| Access Time | 50 ns | 50 ns | 50 ns |
| Data Retention | 200 Year | 200 Year | 200 Years |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 10 MHz |
| Supply Current Max | 5 mA | 5 mA | - |
| Supply Voltage Min | 2.5 V | 2.5 V | - |
| Supply Voltage Max | 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 | Tube | Tube | Tube Alternate Packaging |
| Brand | Microchip Technology | Microchip Technology | - |
| 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 | - |
| Factory Pack Quantity | 60 | 100 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.032805 oz | 0.004938 oz | 0.004938 oz |
| Height | - | 0.85 mm | - |
| Length | - | 3 mm | - |
| Width | - | 3 mm | - |
| Series | - | - | - |
| Package Case | - | - | MSOP-8 |
| Operating Temperature | - | - | -40°C ~ 125°C (TA) |
| Interface | - | - | SPI Serial |
| Voltage Supply | - | - | 2.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 8-MSOP |
| Memory Type | - | - | EEPROM |
| Speed | - | - | 10MHz |
| Format Memory | - | - | EEPROMs - Serial |
| Supply Current Max | - | - | 5 mA |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 2.5 V |