IC UART BRIDGE TO USB 1CH 24-QFN
| Parameter Name | Attribute value |
| protocol | USB |
| Function | Bridge, USB to UART |
| interface | UART |
| standard | USB 2.0 |
| Voltage - Power | 3 V ~ 3.6 V |
| Current - Power | 13mA |
| Operating temperature | -40°C ~ 85°C |
| Package/casing | 24-VFQFN Exposed Pad |
| Supplier device packaging | 24-QFN（4x4） |
| XR21B1421IL24-F | XR21B1421IL24-0A-EVB | XR21B1421IL28-0A-EVB | XR21B1421IL24TR-F | XR21B1421IL28TR-F | XR21B1421IL28-F | |
|---|---|---|---|---|---|---|
| Description | IC UART BRIDGE TO USB 1CH 24-QFN | IC UART BRIDGE TO USB 1CH 24QFN | EVAL BOARD 1 CHANNEL FS USB UART | IC USB HID-UART BRIDGE 1CH 24QFN | IC USB HID-UART BRIDGE 1CH 28QFN | IC UART BRIDGE TO USB 1CH 28-QFN |
| protocol | USB | USB | - | USB | USB | USB |
| Function | Bridge, USB to UART | Bridge, USB to UART | - | Bridge, USB to UART | Bridge, USB to UART | Bridge, USB to UART |
| interface | UART | UART | - | UART | UART | UART |
| standard | USB 2.0 | USB 2.0 | - | USB 2.0 | USB 2.0 | USB 2.0 |
| Voltage - Power | 3 V ~ 3.6 V | 3 V ~ 3.6 V | - | 3 V ~ 3.6 V | 3 V ~ 3.6 V | 3 V ~ 3.6 V |
| Current - Power | 13mA | 13mA | - | 13mA | 13mA | 13mA |
| Operating temperature | -40°C ~ 85°C | -40°C ~ 85°C | - | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package/casing | 24-VFQFN Exposed Pad | - | - | 24-VFQFN Exposed Pad | 28-VFQFN Exposed Pad | 28-VFQFN Exposed Pad |
| Supplier device packaging | 24-QFN（4x4） | - | - | 24-QFN（4x4） | 28-QFN（5x5） | 28-QFN（5x5） |
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