| PartNumber | FT221XQ-R | FT221XS-R | FT221XQ-T |
| Description | USB Interface IC USB to 8 bit SPI / FT1248 IC QFN-20 | USB Interface IC USB to 8 bit SPI / FT1248 IC SSOP-20 | USB Interface IC USB to 8 bit SPI / FT1248 IC QFN-20 |
| Manufacturer | FTDI | FTDI | FTDI |
| Product Category | USB Interface IC | USB Interface IC | USB Interface IC |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-20 | SSOP-20 | QFN-20 |
| Series | FT221 | FT221 | FT221 |
| Product | USB Controllers | USB Controllers | USB Controllers |
| Type | Bridge, USB to SPI/FT1248 | Bridge, USB to SPI/FT1248 | Bridge, USB to SPI/FT1248 |
| Standard | USB 2.0 | USB 2.0 | USB 2.0 |
| Speed | High Speed | High Speed | High Speed |
| Data Rate | 480 Mb/s, 12 Mb/s | 480 Mb/s, 12 Mb/s | 480 Mb/s |
| Operating Supply Current | 8.1 mA to 13.1 mA | 8.1 mA to 13.1 mA | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Reel | Reel | Tray |
| Brand | FTDI | FTDI | FTDI |
| Interface Type | USB | USB | - |
| Moisture Sensitive | Yes | Yes | - |
| Operating Supply Voltage | 2.97 V to 5.5 V | 2.97 V to 5.5 V | - |
| Product Type | USB Interface IC | USB Interface IC | USB Interface IC |
| Factory Pack Quantity | 5000 | 3000 | 490 |
| Subcategory | Interface ICs | Interface ICs | Interface ICs |
| Tradename | X-CHIP | X-CHIP | X-CHIP |
| Unit Weight | 0.004339 oz | 0.016000 oz | 0.004339 oz |