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| PartNumber | LAN91C111I-NS | LAN91C111-NU | LAN91C111-NS |
| Description | Ethernet ICs Ethernet IC PHY IND TEMP | Ethernet ICs Ethernet IC MAC PHY | Ethernet ICs Ethernet IC MAC PHY |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | Ethernet ICs | Ethernet ICs | Ethernet ICs |
| RoHS | Y | Y | Y |
| Product | Ethernet Controllers | Ethernet Controllers | Ethernet Controllers |
| Number of Transceivers | 1 Transceiver | 1 Transceiver | 1 Transceiver |
| Data Rate | 10 Mb/s, 100 Mb/s | 10 Mb/s, 100 Mb/s | 10 Mb/s, 100 Mb/s |
| Interface Type | MII | MII | MII |
| Operating Supply Voltage | 5 V | 5 V | 5 V |
| Minimum Operating Temperature | - 40 C | 0 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 70 C | + 70 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFP-128 | TQFP-128 | QFP-128 |
| Packaging | Tray | Tray | Tray |
| Height | 3.05 mm | 1 mm | 3.05 mm |
| Length | 20 mm | 14 mm | 20 mm |
| Width | 14 mm | 14 mm | 14 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Current Max | 140 mA | 140 mA | 140 mA |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | Ethernet ICs | Ethernet ICs | Ethernet ICs |
| Standard | 10BASE-T, 100BASE-TX | 10BASE-T, 100BASE-TX | 10BASE-T, 100BASE-TX |
| Factory Pack Quantity | 66 | 90 | 66 |
| Subcategory | Communication & Networking ICs | Communication & Networking ICs | Communication & Networking ICs |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Unit Weight | 0.032985 oz | 0.017760 oz | 0.032985 oz |