| PartNumber | KSZ8721SLI | KSZ8721SL-TR | KSZ8721SL |
| Description | Ethernet ICs 10/100 BASE-TX/FX Physical Layer Transceiver | Ethernet ICs 10/100 BASE-TX/FX Physical Layer Transceiver | Ethernet ICs 10/100 BASE-TX/FX Physical Layer Transceiver |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | Ethernet ICs | Ethernet ICs | Ethernet ICs |
| RoHS | Y | Y | Y |
| Series | KSZ8721 | - | KSZ8721 |
| Product | Ethernet Transceivers | Ethernet Transceivers | Ethernet Transceivers |
| Number of Transceivers | 1 Transceiver | 1 Transceiver | 1 Transceiver |
| Data Rate | 10 Mb/s, 100 Mb/s | 100 Mb/s | 100 Mb/s |
| Interface Type | MII, RMII | - | - |
| Operating Supply Voltage | 3.3 V | 3.3 V | 3.3 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 | SSOP-48 | SSOP-48 | SSOP-48 |
| Packaging | Tube | Reel | Tube |
| Height | 2.591 mm | - | - |
| Length | 15.875 mm | - | - |
| Width | 7.493 mm | - | - |
| Brand | Microchip Technology / Micrel | Microchip Technology / Micrel | Microchip Technology / Micrel |
| Duplex | Full Duplex, Half Duplex | - | Full Duplex |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | Ethernet ICs | Ethernet ICs | Ethernet ICs |
| Standard | 10BASE-T, 100BASE-TX | 10BASE-TX, 100BASE-TX | 10BASE-T, 100BASE-FX, 100BASE-TX |
| Factory Pack Quantity | 30 | 1000 | 30 |
| Subcategory | Communication & Networking ICs | Communication & Networking ICs | Communication & Networking ICs |
| Supply Voltage Max | 3.6 V | 3.63 V | 3.3 V |
| Supply Voltage Min | 3 V | 2.97 V | 2.5 V |
| Unit Weight | 0.021175 oz | 0.021175 oz | 0.021175 oz |
| Supply Current Max | - | 151 mA | - |
| Part # Aliases | - | KSZ8721SL TR | - |
| Pd Power Dissipation | - | - | 340 mW |