| PartNumber | 93LC66B/ST | 93LC66B/SN |
| Description | EEPROM 256x16 | EEPROM 256x16 |
| Manufacturer | Microchip | Microchip |
| Product Category | EEPROM | EEPROM |
| RoHS | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT |
| Package / Case | TSSOP-8 | SOIC-8 |
| Memory Size | 4 kbit | 4 kbit |
| Organization | 256 x 16 | 256 x 16 |
| Interface Type | Serial, 3-Wire, Microwire | Serial, 3-Wire, Microwire |
| Access Time | 6 ms | - |
| Data Retention | 200 Year | 200 Year |
| Maximum Clock Frequency | 2 MHz | 2 MHz |
| Supply Current Max | 2 mA | 2 mA |
| Supply Voltage Min | 2.5 V | 2.5 V |
| Supply Voltage Max | 5.5 V | 5.5 V |
| Minimum Operating Temperature | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C |
| Packaging | Tube | Tube |
| Height | 1 mm | 1.25 mm (Min) |
| Length | 3 mm | 4.9 mm |
| Width | 4.4 mm | 3.9 mm |
| Brand | Microchip Technology | Microchip Technology |
| Operating Supply Current | 1.5 mA | 1.5 mA |
| Operating Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Product Type | EEPROM | EEPROM |
| Programming Voltage | 2.5 V to 6 V | 2.5 V to 6 V |
| Factory Pack Quantity | 100 | 100 |
| Subcategory | Memory & Data Storage | Memory & Data Storage |
| Unit Weight | 0.005573 oz | 0.019048 oz |
| Moisture Sensitive | - | Yes |