| PartNumber | AT28HC64B-70TU | AT28HC64B-70TI | AT28HC64B-70TC |
| Description | EEPROM 70ns | EEPROM 1M 5V SDP 70NS IND TEMP | EEPROM 1M 5V SDP- 70NS COM TEMP |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EEPROM | EEPROM | EEPROM |
| RoHS | Y | N | N |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TSOP-28 | TSOP-28 | TSOP-28 |
| Memory Size | 64 kbit | 64 kbit | 64 kbit |
| Organization | 8 k x 8 | 8 k x 8 | 8 k x 8 |
| Interface Type | Parallel | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI |
| Access Time | 70 ns | 55 ns | 55 ns |
| Data Retention | 10 Year | 10 Year | 10 Year |
| Supply Current Max | 40 mA | 40 mA | 40 mA |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 70 C |
| Series | AT28HC64B | AT28HC64B | AT28HC64B |
| Packaging | Tray | - | - |
| Height | 1 mm | 1 mm | 1 mm |
| Length | 8 mm | 8 mm | 8 mm |
| Width | 11.8 mm | 11.8 mm | 11.8 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Moisture Sensitive | Yes | - | - |
| Operating Supply Current | 40 mA | 40 mA | 40 mA |
| Operating Supply Voltage | 5 V | 5 V | 5 V |
| Output Enable Access Time | 35 ns | 35 ns | 35 ns |
| Product Type | EEPROM | EEPROM | EEPROM |
| Programming Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Factory Pack Quantity | 234 | 234 | 234 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |