FT234XD-R interface

FT234XD-R FTDI Interface Integrated Circuits, Applications And Features, Equivalent Part, Datasheet, Product Details


FT234XD-R Description & Features

FT234XD-R FTDI USB to Serial UART Interface IC are USB full-speed, low-power, single-channel (RX/TX) devices that have an enhanced UART interface. They incorporate the FTDI FT234XD-R IC, which features a USB 2.0 full-speed compliant interface, a 5V tolerant UART interface, and a 300mA current limit. The FT234XD-R also supports many popular serial protocols such as RS232, RS422, and RS485.

They are available in a variety of package options, including a 28-pin SOIC and a 16-pin QFN. The FT234XD-R is ideal for applications that require a low-cost, single-channel USB to serial interface. It can be used to connect a device to a PC, or to connect a serial device to another serial device. It can also be used with various operating systems, including Windows, Mac OS X, and Linux. The FT234XD-R is also compatible with USB 2.0 and USB 3.0 devices. The FT234XD-R is a great choice for applications that require a reliable and cost-effective USB to serial interface.

FT234XD-R Features

 Single-chip USB to asynchronous serial data
transfer interface.

 Entire USB protocol is handled on the chip. No USB
specific firmware programming required.

 Fully integrated 2048-byte multi-time programmable (MTP) memory, storing device descriptors and CBUS I/O configuration.

 Fully integrated clock generation with no external
crystal required plus optional clock output selection
enabling a glue-less interface to external MCU or

 Data transfer rates from 300 baud to 3 Mbaud
(RS422, RS485, and RS232) at TTL levels.
 512-byte receive buffer and 512-byte transmit
buffer utilizing buffer smoothing technology to
allow for high data throughput.

 FTDI’s royalty-free Virtual Com Port (VCP) and
Direct (D2XX) drivers eliminate the requirement
for USB driver development in most cases.

 Configurable CBUS I/O pin.
 Transmit and receive LED drive signals.
 UART interface support for 7 or 8 data bits, 1 or 2
stop bits and odd / even / mark/space / no parity
 Synchronous and asynchronous bit bang interface
options with RD# and WR# strobes.

 USB Battery Charging Detection. Allows for USB
peripheral devices to detect the presence of a
higher power source to enable improved

 The device is supplied pre-programmed with unique
USB serial number.

 USB Power Configurations; supports bus-powered,
self-powered and bus-powered with power switching
 Integrated +3.3V level converter for USB I/O.
 True 3.3V CMOS drive output and TTL input;
Operates down to 1V8 with external pull-ups.
Tolerant of 5V input.

 Configurable I/O pin output drive strength;
4 mA (min) and 16 mA (max).
 Integrated power-on-reset circuit.
 Fully integrated AVCC supply filtering – no
external filtering required.

 UART signal inversion option.
 + 5V Single Supply Operation.
 Internal 3.3V/1.8V LDO regulators
 Low operating and USB suspend current;
8mA (active-typ) and 70uA (suspend-typ).

 UHCI/OHCI/EHCI host controller is compatible.
 USB 2.0 Full Speed compatible.
 Extended operating temperature range; -40 to
 Available in compact Pb-free 12-pin DFN package
(3mm x 3mm) RoHS compliant.

FT234XD-R Applications

USB to RS232/RS422/RS485 Converters
 Upgrading Legacy Peripherals to USB
 Utilizing USB to add system modularity
 Incorporate USB interface to enable PC
transfers for the development system

 Cellular and Cordless Phone USB data transfer
cables and interfaces
 Interfacing MCU/PLD/FPGA based designs to
add USB connectivity
 USB Audio and Low Bandwidth Video data

 USB Smart Card Readers
 USB Instrumentation
 USB Industrial Control
 USB FLASH Card Reader and Writers
 Set Top Box PC – USB interface
 USB Wireless Modems

 USB Bar Code Readers
 USB dongle implementations for Software/
Hardware Encryption and Wireless Modules
 Detection of dedicated charging port for battery
charging at higher supply currents.

FT234XD-R Datasheet

PDF download

FT234XD-R Alternate Part


FT234XD-R Where To Buy