| PartNumber | TLK1221RHARG4 | TLK1221RHAT | TLK1221RHAR |
| Description | Ethernet ICs Gigabit Ethernet Serdes | Ethernet ICs Ethernet Trans | Ethernet ICs Ethernet Trans |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Ethernet ICs | Ethernet ICs | Ethernet ICs |
| RoHS | Y | Y | Y |
| Series | TLK1221 | TLK1221 | TLK1221 |
| Product | Ethernet Transceivers | Ethernet Transceivers | Ethernet Transceivers |
| Number of Transceivers | 1 Transceiver | 1 Transceiver | 1 Transceiver |
| Data Rate | 0.6 Gb/s | 0.6 Gb/s | 0.6 Gb/s |
| Operating Supply Voltage | 2.5 V | 2.5 V | 2.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | VQFN-40 | VQFN-40 | VQFN-40 |
| Packaging | Reel | Reel | Reel |
| Height | 0.9 mm | 0.9 mm | 0.9 mm |
| Length | 6 mm | 6 mm | 6 mm |
| Width | 6 mm | 6 mm | 6 mm |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Current Max | 113 mA | 113 mA | 113 mA |
| Development Kit | TLK1221EVM | TLK1221EVM | TLK1221EVM |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | Ethernet ICs | Ethernet ICs | Ethernet ICs |
| Factory Pack Quantity | 2500 | 250 | 2500 |
| Subcategory | Communication & Networking ICs | Communication & Networking ICs | Communication & Networking ICs |
| Supply Voltage Max | 2.7 V | 2.7 V | 2.7 V |
| Supply Voltage Min | 2.3 V | 2.3 V | 2.3 V |
| Unit Weight | 0.003668 oz | 0.003668 oz | 0.003668 oz |