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| PartNumber | AT25040B-XHL-T | AT25040B-XHL-B | AT25040B-XPD-T |
| Description | EEPROM 4K (512 X 8) SPI, 1.8V | EEPROM 4K (512 X 8) SPI, 1.8V | EEPROM SEEPROM, 4K, SPI - 5MHz, Auto Temp, 8-TSSOP |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EEPROM | EEPROM | EEPROM |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TSSOP-8 | TSSOP-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 | - |
| Data Retention | 100 Year | 100 Year | - |
| Maximum Clock Frequency | 20 MHz | 20 MHz | - |
| Supply Current Max | 10 mA | 10 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 | - |
| Series | AT25040B | AT25040B | AT25040B |
| Packaging | Reel | Tube | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | - |
| Product Type | EEPROM | EEPROM | EEPROM |
| Factory Pack Quantity | 5000 | 100 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Unit Weight | 0.005573 oz | 0.005573 oz | - |
| Qualification | - | - | AEC-Q100 |