FT231XQ-T

FT231XQ-T is an USB to full handshake UART IC. This is a USB to serial UART interface with full modem control, designed for reliable and high-speed USB to asynchronous serial data communication. It integrates the complete USB protocol on-chip, eliminating the need for USB-specific firmware development, and includes 2048byte multi-time programmable (MTP) memory for storing device descriptors and CBUS I/O configuration. The device features integrated clock generation with no external crystal required and optional clock output support for direct interfacing with MCUs or FPGAs. It supports data transfer rates from 300baud to 3Mbaud for RS232, RS422, and RS485 communication at TTL levels, along with 512byte receive and transmit buffers for smooth high-throughput performance. The FT231X supports FTDI’s royalty-free VCP and D2XX drivers, configurable CBUS I/O pins, TX/RX LED drive signals, and flexible UART configurations including 7 or 8 data bits, multiple stop bits, and parity options.

• Synchronous & asynchronous bit bang modes, support for bus-powered & self-powered USB configurations
• USB battery charger detection, pre-programmed unique USB serial numbers
• Integrated 3.3V USB I/O level conversion, true 3.3V CMOS outputs
• TTL-compatible inputs, operation down to 1.8V with external pull-ups, 5V input tolerance
• Configurable I/O pin output drive strength; 4mA(min) and 16mA(max)
• Integrated power-on-reset (POR) circuit
• UART signal inversion option supported
• Operates from a single +5V power supply, internal 3.3V / 1.8V LDO regulators included
• Low power consumption with 8mA typical active current, USB suspend current of 125µA typical
• Extended operating temperature range from -40°C to +85°C, available in 20 pin QFN package