| PartNumber | 840NT4NLGI | 840NT4-01NLGI8 | 840NT4-01NLGI |
| Description | Clock Drivers & Distribution Sys DDR Clock B4/T4 25MHz - 200MHz | Clock Drivers & Distribution Ethernet & USB Clock B4/ T4-based | Clock Generators & Support Products Ethernet & USB Clock B4/ T4-based |
| Manufacturer | IDT (Integrated Device Technology) | IDT (Integrated Device Technology) | IDT (Integrated Device Technology) |
| Product Category | Clock Drivers & Distribution | Clock Drivers & Distribution | Clock Generators & Support Products |
| RoHS | Y | Y | Y |
| Series | 840NT4I | 840NT4 | 840NT4 |
| Package / Case | VFQFPN-48 | VFQFPN-48 | VFQFPN-48 |
| Packaging | Tray | Reel | Tray |
| Height | 0.9 mm | 0.9 mm | 0.9 mm |
| Length | 7 mm | 7 mm | 7 mm |
| Width | 7 mm | 7 mm | 7 mm |
| Brand | IDT | IDT | IDT |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | Clock Drivers & Distribution | Clock Drivers & Distribution | Clock Generators |
| Factory Pack Quantity | 260 | 2000 | 260 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Part # Aliases | 840NT4I | 840NT4-01I | 840NT4-01I |