FT4222HQ-T

Controllers Overview

The FT4222HQ-T is a USB 2.0 to I2C/SPI bridge controller manufactured by FTDI, housed in a 32-VQFN (5x5) package with exposed pad. It supports USB High Speed operation and provides configurable I2C and SPI interfaces. The device operates on supply voltages of 1.8V, 2.5V, 3.3V, or 5V, with a typical supply current of 78mA. It functions within a temperature range of -40°C to +85°C. The chip integrates OTP memory for VID, PID, and serial numbers, handling the entire USB protocol internally.

Controllers Feature Summary

• Integrates a single-chip USB 2.0 High-Speed bridge to I2C and SPI interfaces
• Supports configurable industry-standard master and slave interface controllers
• Includes internal OTP memory for vendor-specific data storage
• Handles the complete USB protocol within the silicon

Controllers Applications

• USB to I2C bridge implementations
• USB to SPI bridge implementations
• Embedded systems requiring USB connectivity for peripheral control

Controllers Procurement Notes

Verify the specific suffix 'T' against official FTDI documentation to confirm packaging details, as standard listings often reference 'R' for Reel or 'D' for Tape & Reel variants. Ensure compatibility with required operating voltage and interface configurations before procurement.

Controllers Selection Notes

Select this component when a compact solution is needed to convert USB 2.0 High-Speed signals to I2C or SPI protocols. Consider the 32-VQFN package size and the requirement for external components if driving higher speed modes. Verify that the host system supports the necessary USB drivers provided by FTDI.

Controllers Part Context

The FT4222H series represents FTDI's advanced USB-to-I2C/SPI bridge solutions. This model is part of the H-CHIP family, designed for applications requiring flexible interface conversion without complex firmware development on the host side.

Controllers Replacement Considerations

Check for FT4222HQ-D-R or FT4222HQ-C-R equivalents from FTDI, ensuring pinout and electrical specifications match. Verify if alternative suppliers offer compatible drop-in replacements with identical interface support.