FT231XQ-R – Integrated Circuit – FTDI Chip

USB Interface IC USB to Full Serial UART IC QFN-20

FT231XQ-R – USB to UART Bridge IC – FTDI Chip

Simplify USB-to-serial connectivity with the FT231XQ-R from FTDI Chip. This reliable USB 2.0 bridge IC enables seamless communication between USB hosts and UART-based devices, offering plug-and-play functionality and broad compatibility for embedded systems. PCX ensures genuine FTDI components with same-day shipping and dedicated technical support.

Key Features

Protocol: USB 2.0 Full Speed (12Mbps)
Function: USB to UART Serial Bridge
Supply Voltage: 3.3V to 5V Operation
Low Power: 8mA Typical Current Consumption
Industrial Temp Range: -40°C to 85°C
Compact Package: 20-QFN (4×4) for Space-Constrained Designs

Technical Specifications
Part of FTDI’s USBmadeEZ-UART™ series, the FT231XQ-R integrates a USB controller and UART interface in a 20-WFQFN exposed pad package. It supports standard USB 2.0 protocols and features configurable I/O voltage levels (3.3V/5V) for flexible system integration. The device includes integrated EEPROM for custom vendor IDs and product descriptors.

Typical Applications

Embedded System USB Connectivity
Industrial Control & Automation Interfaces
Consumer Electronics Firmware Programming
IoT Device Communication Gateways
Diagnostic & Debugging Adapters

About FTDI Chip
Future Technology Devices International (FTDI) is a global leader in USB interface technology, specializing in ICs and software solutions for industrial, consumer, and computing applications. With over 25 years of innovation, FTDI Chip has set industry standards for USB connectivity with robust, certification-ready designs.
The company’s commitment to quality is demonstrated through rigorous testing procedures and long-term product lifecycle support. FTDI’s solutions are trusted worldwide for their reliability, driver compatibility, and ease of integration across diverse operating systems.

About USB to UART Bridge ICs
USB to UART bridge integrated circuits provide critical protocol conversion between universal serial bus (USB) interfaces and legacy serial communication standards. They enable modern computers to communicate with microcontrollers, sensors, and industrial equipment designed for UART/TTL serial protocols without hardware redesign.
These ICs are fundamental components in development tools, programming adapters, and embedded systems where USB connectivity simplifies user interaction while maintaining backward compatibility. Their plug-and-play functionality reduces development time and eliminates the need for complex driver development in end applications.

Packaging Options
Available in industry-standard formats: Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® for high-volume manufacturing efficiency. Contact PCX for reel quantities and kitting services.

Frequently Asked Questions
Q: Does this IC require external components for operation?
A: Minimal external components are needed – typically just decoupling capacitors and resistors for USB data lines.

Q: Is driver software included?
A: FTDI provides free VCP (Virtual COM Port) and D2XX drivers for Windows, Linux, and macOS on their website.

Q: Can I customize the USB descriptors?
A: Yes, the integrated EEPROM allows customization of vendor ID, product ID, and string descriptors.

Q: What baud rates does it support