FT260 - HID class USB to UART / I2C Master IC

The FT260 is an ideal bridge between USB and either UART or I2C peripherals for sensor or human interface peripheral applications.

Leveraging the advantages of using a standard USB HID class driver which will be already installed in most OS (our other devices are Vendor Class), the FT260 provides an ideal, fast to implement, bridge between USB and either UART or I2C peripherals. The I2C mode of operation will also support the HID over I2C protocol defined by Microsoft with Windows 8 or above.

The FT260 is offered in a small 28 pin (TSSOP or WQFN) package.

Key Features:

  • Full speed HID class USB device
  • I2C Master interface supporting Standard Mode (SM), Fast Mode (FM), Fast Mode Plus (FM+) amd High Speed mode (HS)
  • UART interface supporting 1200-12MBaud
  • 1.8V to 3.3V IO levels supported
  • No external crystal required

For sales and technical development support from our in-house engineering team, please contact the Alpha Micro team.

  • Single chip USB to UART/I²C bridge with standard Human Interface Device (HID) class support
  • USB2.0 compliant Full Speed device with entire USB protocol handled on the chip.
  • Support 2 USB HID Interfaces, each corresponding to the on-chip physical interfaces, I²C and UART
  • Pin configuration of enabling HID interface for variety of applications
  • HID over I²C specification support
  • Configurable I²C Master Interface controller conforming to I²C v2.1 and v3.0 specification.
  • Supports 4 speed modes defined in I²C-bus Specification, standard mode (SM), fast mode (FM), Fast mode plus (FM+), and High Speed mode (HS)
  • Robust FTDI UART controller with hardware and software flow control
  • Data transfer rate from 1.2 Kbuad to 12 Mbaud (RS422, RS485, RS232) at TTL levels
  • Configurable GPIOs can be easily controlled by software applications under HID class via the USB bus
  • Fully integrated oscillator PLL with no external crystal required
  • On-chip eFUSE for USB Vendor ID (VID), Product ID (PID), and other vendor specific parameters.
  • Unique USB serial number generation engine and programming path to external EEPROM.
  • Integrated 5V-3.3V-1.8V level converter for USB I/O.
  • +5V USB VBUS detection engine
  • USB Power Configurations; supports buspowered, self-powered and bus-powered with power switching.
  • USB2.0 Low operating and suspend current; 24mA (active-typ) and 385µA (suspend-typ).
  • True 3.3V CMOS drive output and TTL input. (operates down to 1V8 with external pull-ups)
  • Multiple I/O operating voltage level +3.3V, +2.5V, +1.8V
  • Pin output drive strength; 4 mA(min) and 16 mA(max)
  • Integrated power-on-reset circuit.
  • USB Battery Charger Detection.
  • UHCI / OHCI / EHCI / XHCI host controller compatible.
  • Extended operating temperature range; -40 to 85⁰C.
  • Available in compact Pb-free 28 Pin WQFN or TSSOP packages (RoHS compliant).
  • HID class Device controller
  • USB to HID-over-I2C Bridge
  • USB to I2C master controller
  • Sensor control
  • USB to RS232/RS422/RS485 Converters
  • Interfacing MCU/PLD/FPGA based designs to USB
  • USB Instrumentation
Part Number Description Pack Size
FT260Q-R FT260Q HID class USB to UART / I2C Master IC, 28-pin WQFN, 5mm x 5mm, MSL 3
Reel of 2500
FT260Q-T FT260Q HID class USB to UART / I2C Master IC, 28-pin WQFN, 5mm x 5mm, MSL 3
Tray of 490
FT260S-R FT260Q HID class USB to UART / I2C Master IC, 28-pin TSSOP, 9.7mm x 6.4mm, MSL 3 Reel of 2500
FT260S-U FT260Q HID class USB to UART / I2C Master IC, 28-pin TSSOP, 9.7mm x 6.4mm, MSL 3 Tube of 50
Development Tools
UMFT260EV1A FT260 development module Each
UMFTPD3A Universal programming module, compatible with FTDI FT260 and FT4222H IC's Each

FTDI's UMFT260EV1A is a development module for FTDI's FT260, HID-class USB to UART/I²C Bridge IC and is ideal for functionality evaluation and fast development.

The UMFT260EV1A is designed to plug into a standard 0.8" wide 24 pin DIP socket and connects to a host system is via a Micro USB-B connector.


The UMFTPD3A Universal Programmer Module is used to provide an external programming voltage (Vpp) that covers 1.5 to 6.5V to program FTDI development modules and ICs with internal OTP memory or eFUSE (electrical poly-fuse).

The embedded OTP memory or eFUSE in the FTDI chips is used to store USB Vendor ID (VID), Product ID (PID), device serial number, product description string and chip configuration information. Users can store this vendor specific information in the OTP or eFUSE and save the cost of an external EEPROM from the BOM.

The UMFTPD3A assists the user in programming the OTP memory or eFUSE directly through a USB host controller with FTDI's programming software tool, FT_Prog.

The UMFTPD3A is compatible with the FT260/UMFT260EV1A and the FT4222H/UMFT4222EV chips and modules.


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Last updated: 21 May 2018