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| PartNumber | KSZ9021GN | KSZ9021GN-TR | KSZ9021 |
| Description | Ethernet ICs GbE Physical Layer Transceiver with GMII/MII | Ethernet ICs GbE Physical Layer Transceiver with GMII/MII | |
| Manufacturer | Microchip | Microchip | Microchip Technology |
| Product Category | Ethernet ICs | Ethernet ICs | IC Chips |
| RoHS | Y | Y | - |
| Series | KSZ9021 | - | KSZ9021 |
| Product | Ethernet Transceivers | Ethernet Transceivers | Ethernet Transceivers |
| Number of Transceivers | 1 Transceiver | 1 Transceiver | 1 Transceiver |
| Operating Supply Voltage | 1.14 V to 3.465 V | 1.14 V to 3.465 V | 1.14 V to 3.465 V |
| Minimum Operating Temperature | 0 C | - | 0 C |
| Maximum Operating Temperature | + 70 C | - | + 70 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-64 | QFN-64 | - |
| Packaging | Tray | Reel | Tray Alternate Packaging |
| Brand | Microchip Technology / Micrel | Microchip Technology / Micrel | - |
| Supply Current Max | 555 mA | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Product Type | Ethernet ICs | Ethernet ICs | - |
| Standard | 10BASE-T, 100BASE-TX, 1000BASE-T | - | 10BASE-T 100BASE-TX 1000BASE-T |
| Factory Pack Quantity | 348 | 1000 | - |
| Subcategory | Communication & Networking ICs | Communication & Networking ICs | - |
| Supply Voltage Max | 1.26 V, 3.465 V, 2.625 V | - | - |
| Supply Voltage Min | 1.14 V, 3.135 V, 2.375 V | - | - |
| Unit Weight | 0.007277 oz | 0.007277 oz | 0.007277 oz |
| Part # Aliases | - | KSZ9021GN TR | - |
| Type | - | - | Transceiver |
| Package Case | - | - | QFN-64 |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Mounting Type | - | - | Surface Mount |
| Voltage Supply | - | - | 3.135 V ~ 3.465 V |
| Supplier Device Package | - | - | 64-QFN (8x8) |
| Protocol | - | - | Gigabit Ethernet |
| Data Rate | - | - | - |
| Number of Drivers Receivers | - | - | 2016/8/8 |
| Duplex | - | - | Full |
| Receiver Hysteresis | - | - | - |
| Supply Current Max | - | - | 555 mA |
| Supply Voltage Max | - | - | 1.26 V 3.465 V 2.625 V |
| Supply Voltage Min | - | - | 1.14 V 3.135 V 2.375 V |