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Overview
| Topology | Other Topology |
| IC revision | 1.0 |
Description
XR21B1422/1424 POWER & USBXR21B1422/1424 Evaluation BoardRev. 1.0Updated 2/7/2014The XR21B1422 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) bridge to USB interface. The USB interface is fully compliant to the USB 2.0 (Full-Speed) specification with 12 Mbps USB data transfer rate. The USB interface also supports USB suspend, resume and remote wakeup operations. The USB Vendor ID, Product ID, power mode, remote wakeup support, maximum power, and numerous other settings may be programmed in the on-chip OTP memory via the USB interface.The XR21B1422 includes an internal oscillator and does not require an external crystal/oscillator. Any UART baud rate up to 12 Mbps may be generated with this internal clock and the fractional baud rate generator.
Features
»±15kV ESD on USBD+/USBD-»USB 2.0 Compliant, Full-Speed (12Mbps)»Unique pre-programmed USB serial number»Internally generated 48MHz core clock»Enhanced UART features
- Baud rates up to 12 Mbps
- Fractional Baud Rate Generator
- 512-byte TX and 512-byte RX FIFOs
- Auto Hardware / Software Flow Control
- Multidrop and Half-Duplex Modes
- Auto RS-485 Half-Duplex Control
- Selectable GPIO or Modem I/O
»Up to 10 GPIOs per channel»5V tolerant GPIO inputs»Suspend state GPIO configuration»Configurable clock output»40-pin QFN package»Industrial -40°C to +85°C Temperature Range
Typical applications
- Security Systems / ATM Terminals
- USB to Serial Controllers
- Building Automation / Factory and Process Control
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | ISAT (A) | fres (MHz) | Application | Interface Type | IR (A) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Mount | Operating Temperature | Working Voltage (V (AC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744025100 | SPEC | 8 files | WE-TPC SMT Tiny Power Inductor | 10 | 1.1 | 41 | – | – | – | 2 | – | 2.8 | – | – | 1 | – | SMT | -40 °C up to +125 °C | – | ||
 | 61300811121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | 8 | Single | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
| 61300211121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | 2 | Single | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
| 61300311121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | 3 | Single | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
| 61300411121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | 4 | Single | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
| 61300611121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | 6 | Single | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
 | 61300821121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Dual Pin Header | – | – | – | – | – | 3 | 8 | Dual | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
| 61301011121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | 10 | Single | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
| 61301021121 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Dual Pin Header | – | – | – | – | – | – | 10 | Dual | – | Pin Header | Straight | 3 | Bag | THT | -40 °C up to +105 °C | 250 | |
 | 61400416121 | SPEC | – | 6 files | WR-COM USB 2.0 Horizontal THT | – | – | – | USB 2.0 | Type B | – | 4 | – | – | Receptacle | Horizontal | 1.5 | Tray | THT | -40 °C up to +105 °C | 30 | |
 | 618009211721 | SPEC | – | 6 files | WR-DSUB 8.08 mm Male Angled PCB Connector w/o Hex Screw | – | – | – | – | – | 3 | 9 | – | – | Male | Angled | 3 | Tray | – | -55 °C up to +105 °C | 125 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744025100 | SPEC | |
| 61300811121 | SPEC | – |
| 61300211121 | SPEC | – |
| 61300311121 | SPEC | – |
| 61300411121 | SPEC | – |
| 61300611121 | SPEC | – |
| 61300821121 | SPEC | – |
| 61301011121 | SPEC | – |
| 61301021121 | SPEC | – |
| 61400416121 | SPEC | – |
| 618009211721 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | ISAT (A) | fres (MHz) | Application | Interface Type | IR (A) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Mount | Operating Temperature | Working Voltage (V (AC)) | Samples |
|---|