Hi-Speed USB to 10/100 Ethernet Bridge w/1-CH UART
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Information Hi-Speed USB to 10/100 Ethernet Bridge w/1-CH UART
CPU Interface USB 2.0
Ethernet MAC/PHY (Mbps) 10/100
Max Data Rate (Mbps) 15
UART Tx/Rx FIFO (Bytes) 1024/1024
Auto Half-Duplex Control
No. of GPIOs 8
I2C Master
HBM ESD (USB) (kV) 15
Supply Voltage Range VCC (V) 4.4 to 5.25
Max UART/GPIO Input Voltage (V) 3.6
Max UART/GPIO Output Voltage (V) 3.6
Temperature Range (°C) -40 to 85
Package QFN-32
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The XR22801 is a Hi-Speed USB 2.0 compound device with an embedded hub and 4 downstream USB functions: 10/100 Ethernet MAC and PHY, UART, multi-master capable I2C controller, and an Enhanced DedicatedGPIO Entity (EDGE) controller.

The upstream USB interface has an integrated USB 2.0 PHY and device controller that is compliant with both Hi-Speed (480Mbps) and Full-Speed (12Mbps) USB 2.0. The vendor ID, product ID, power mode, remotewakeup support and maximum power consumption are amongst the values that can be programmed using the on-chip One-Time Programmable (OTP) memory.

The Ethernet 10/100 MAC and PHY are compliant with IEEE 802.3 and supports auto-negotiation, auto-MDIX, checksum offload, auto-polarity correction in 10Base-T and remote wakeup capabilities.

The enhanced UART has a maximum data rate of 15 Mbps. Using a fractional baud rate generator, any baud rate between 300 bps and 15 Mbps can be accurately generated. In addition, the UART has a large 1024-byte TX FIFO and RX FIFO to optimize the overall data throughput for various applications. The automatic RS485 control feature simplifies both the hardware and software for half-duplex RS-485 applications. If required, the multidrop (9-bit) mode feature further simplifies typical multidrop applications by enabling / disabling the UART receiver depending on the address byte received.

The multi-master capable I2C controller and EDGE controller (up to 16 GPIOs) can be accessed via the USB HID interface. The EDGE pins or I2C interface can be used for controlling and monitoring other peripherals. Up to 2 EDGE pins can be configured as a PWM generator.

  • USB 2.0 Compliant Interface
  • 10/100 Ethernet MAC and PHY
  • Enhanced UART
  • Half-Duplex Mode
  • I2C Multi-master
  • Enhanced Dedicated GPIO Entity (EDGE)
  • Single +5.0V Power Supply Input
  • Regulated +3.3V Output Power
  • Single 25MHz Crystal
  • ±15kV HBM ESD Protection on USB data pins
  • ±8kV HBM ESD Protection on all other pins

  • USB to Ethernet Dongles
  • POS Terminals
  • Test Instrumentation
  • Networking
  • Factory Automation and Process Controls
  • Industrial Applications

Download Software Drivers

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets XR22801 Hi-Speed USB to 10/100 Ethernet Bridge 1D April 2019 993.4 KB
Application Notes DAN-190, MaxLinear UARTs in RS-485 Applications R01 July 2023 2.4 MB
Application Notes AN202, USB UART Board Design Considerations for USB Compliance R02 June 2023 2.4 MB
Application Notes AN-226, Windows Driver Customization for USB UARTs R00 February 2020 2.5 MB
User Guides & Manuals XR2280x USB Ethernet Bridges Design Guide 00 April 2020 2.3 MB
User Guides & Manuals XR22801 Evaluation Board User’s Manual 1A June 2014 1.4 MB
Software: GUIs & Utilities Sample USB UART GUI (Serial Test App) July 2021 1.4 MB
Software: GUIs & Utilities Android Application 1C November 2015 476.6 KB
Product Flyers Full-Speed USB UART Family 1.1 November 2020 605.3 KB
Schematics & Design Files XR22801 Evaluation Board BRD, RSN Files June 2016 331.6 KB
Schematics & Design Files Evaluation Board Schematic 2.0 February 2016 35.9 KB
Product Brochures Interface Brochure November 2023 3.7 MB
Software: Drivers Windows 10 and newer January 2023 169.2 KB
Software: Drivers Windows 11 January 2023 42.5 KB
Software: Drivers Linux 3.6.x and Newer 1D September 2021 29.9 KB
Software: Drivers Windows 7, 8 December 2019 145.7 KB
Software: Drivers Windows 10 June 2018 78 KB
Software: Drivers Windows XP, Vista, 7 December 2017 86 KB
Software: Drivers XRUSB1 for Win XP SP3 and newer March 2016 1 MB
Software: Drivers Linux 2.6.18 to 3.4.x 1A January 2015 19.1 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
XR22801IL32TR-F N Y Y Y Y L2 / 260ᵒC QFN32 5x5 OPT3

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement Buy Now Order Samples PDN
XR22801IL32-F QFN32 5x5 OPT3 -40 85 OBS
XR22801IL32TR-F QFN32 5x5 OPT3 -40 85 Active Order
XR22801IL32-0A-EB Board Active
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.


Pkg Code Details Quantities Dimensions PDF
QFN32 5x5 OPT3
  • JEDEC Reference:
  • MSL Pb-Free: L2 @ 260ºC
  • MSL SnPb Eutectic:
  • ThetaJA: 30
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: 490
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: 490
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Quadrant 1
  • Dimensions: mm
  • Length: 5
  • Width: 5
  • Thickness: 1.00
  • Lead Pitch: 0.5


Distribution Date Description File
01/31/2022 To increase manufacturing capacity, MaxLinear has qualified UTL3 extension site as an alternate assembly site together with UTL1 for QFN and DFN products.
10/08/2021 In addition to the currently qualified UTAC, Thailand site, MaxLinear has qualified ANST, China, as an alternate site for assembly and test for the devices noted above. There is no change to datasheet, form, fit or function of the devices.
12/12/2018 Product Discontinuation Notice
07/21/2017 Qualification of alternate assembly subcon, ANST.
01/31/2017 Addition of qualified 12 inch wafer processing line in Global Foundries, in addition to the currently qualified 8 inch wafer processing. Note: Reliability report will be available February 17, 2017.
01/27/2017 Qualification of alternate assembly subcon, ANST, China.