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USB Interface, USB-UART Converter, USB 2.0, 2.97 V, 5.5 V, QFN, 20 Pins


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FT231XQ-R   Datasheet
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Product Overview

The FT231XQ is an USB2.0 Full-speed IC, offers a compact bridge to full handshake UART interfaces. The device is an UART, capable of operating up to 3Mbaud, with low power consumption (8mA). The IC includes the complete FT-X series feature set and enables USB to be added into a system design quickly and easily over a UART interface.
  • Single chip USB to asynchronous serial data transfer interface
  • Entire USB protocol handled on chip, no USB specific firmware programming required
  • Fully integrated 2048-byte EEPROM for storing device descriptors and CBUS I/O configuration
  • Fully integrated clock generation with no external crystal required
  • Data transfer rates from 300baud to 3Mbaud
  • 512-byte receive buffer and 512-byte transmit buffer utilising buffer smoothing technology
  • FTDI's royalty-free virtual com port (VCP) and direct (D2XX) drivers
  • Configurable CBUS I/O pins
  • Transmit and receive LED drive signals
  • UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd/even/mark/space/no parity
  • Synchronous and asynchronous bit bang interface options with RD# and WR# strobes
  • Battery charger detection
  • Device supplied pre-programmed with unique USB serial number
  • Supports bus powered, self powered and high-power bus powered USB configurations
  • Integrated +3.3V level converter for USB I/O
  • True 3.3V CMOS drive output and TTL input
  • Configurable I/O pin output drive strength
  • Integrated power-on-reset circuit
  • UART signal inversion option
  • Internal 3.3/1.8V LDO regulators


Computers & Computer Peripherals, Signal Processing, Audio, Imaging, Video & Vision, Sensing & Instrumentation, Industrial, Automation & Process Control, Wireless


Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.


ESD sensitive device, take proper precaution while handling the device.

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USB-UART Converter

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Technical Documents (1)

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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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