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| PartNumber | 25AA040T-I/SN | 25AA040T/SN | 25AA040T-I/SNG |
| Description | EEPROM 512x8 - 1.8V | EEPROM 512x8 - 1.8V | |
| Manufacturer | Microchip | Microchip | - |
| Product Category | EEPROM | EEPROM | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOIC-8 | SOIC-8 | - |
| Memory Size | 4 kbit | 4 kbit | - |
| Organization | 512 x 8 | 512 x 8 | - |
| Interface Type | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI | - |
| Access Time | 475 ns | 5 ms | - |
| Data Retention | 200 Year | 200 Year | - |
| Maximum Clock Frequency | 1 MHz | 1 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 | 0 C | - |
| Maximum Operating Temperature | + 85 C | + 70 C | - |
| Packaging | Reel | Reel | - |
| Height | 1.25 mm (Min) | 1.25 mm (Min) | - |
| Length | 4.9 mm | 4.9 mm | - |
| Width | 3.9 mm | 3.9 mm | - |
| Brand | Microchip Technology | Microchip Technology | - |
| Moisture Sensitive | Yes | Yes | - |
| Operating Supply Current | 5 mA | 5 mA | - |
| Operating Supply Voltage | 1.8 V, 5.5 V | 1.8 V, 5.5 V | - |
| Product Type | EEPROM | EEPROM | - |
| Programming Voltage | 2.5 V, 3.3 V, 5 V | 2.5 V, 3.3 V, 5 V | - |
| Factory Pack Quantity | 3300 | 3300 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.019048 oz | 0.019048 oz | - |