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FT260Q-T

FT260Q-T

FTDI, Future Technology Devices International Ltd
USB Bridge, USB to I2C/UART USB 2.0 I2C, UART Interface 28-WQFN (5x5)
Active3,323 in stock

Overview

The FT260Q-T is a compact USB 2.0 Full Speed bridge chip that converts USB signals to either UART or I2C interfaces. It is unique among USB bridges because it uses standard HID (Human Interface Device) class drivers, which are natively supported by most operating systems, eliminating the need for custom vendor drivers. The device features an integrated oscillator, eFUSE for configuration, and 14 GPIO pins for additional control logic.

Why Choose This Part

The primary advantage is the HID-class implementation, which simplifies software deployment by using built-in OS drivers. It supports multiple I/O voltages (1.8V, 2.5V, and 3.3V) and provides 5V tolerant inputs, making it compatible with a wide range of modern logic levels. The integration of the oscillator and PLL reduces external component count and PCB footprint.

Applications

USB to I2C Peripheral Control
Connecting I2C-based sensors, ADCs, or DACs directly to a PC without a microcontroller.
Embedded System Debugging
Providing a high-speed UART debug port for microprocessors that lacks a native USB interface.
USB Battery Charging Detection
Implementing power source detection for systems that need to identify USB wall chargers or PC ports.
HID-compliant Instrumentation
Building laboratory instruments or industrial controllers that must work instantly on Windows, Linux, or macOS without software installation.

Key Specifications

Function Bridge, USB to I2C/UART
Protocol USB
Interface I2C, UART
Standards USB 2.0
Package / Case 28-WFQFN Exposed Pad
Voltage - Supply 1.8V, 2.5V, 3.3V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 28-WQFN (5x5)

Getting Started

To evaluate the chip, engineers often use the UMFT260EV development module which breaks out all 28 pins. Development is supported by the FT260 Lib, which provides an API for C++ and Python to communicate with the HID interface. Ensure the eFUSE is configured if a custom USB string or specific I2C clock speed is required.

Also Consider

CP2112 SiLSilicon Labs - A dedicated USB-to-I2C HID bridge that is widely used for SMBus and I2C configuration tasks.
FT232H FTDI - A higher performance single-channel bridge that supports High Speed (480Mbps) and multiple protocols like SPI and JTAG via MPSSE.
MCP2221A MCHPMicrochip Technology - An alternative HID-class bridge that provides simultaneous USB-to-UART and USB-to-I2C functionality.