Product Description:


FTDI cables are the family of USB to TTL serial UART converter cables and they are incorporated with FT232R IC.The chip handles all the protocol of converting USB data to UART serial data. The cables provide a fast, simple way to connect devices with a TTL level serial interface to USB and they do not require any additional software installation and setting before using them. So they are simple plug and play devices.

Pin Configuration

As shown in FTDI cable pin diagram, one end of FTDI cable is connected to USB and other end we have six output pins. These six pins are RS232 output. The function of each pin is stated in below table.

Pin Color Function
1 Black GND – Ground
2 Brown CTS – Clear to Send
3 Red VCC- Positive Voltage Output (+5V)
4 Orange TXD- Transmit Asynchronous Data output
5 Yellow RXD- Receive Asynchronous Data input
6 Green RTS- Request to Send


Features and Electrical Characteristics

  • Data transfer rates from 300 baud to 3Mbaud at TTL levels.
  • Supports RS485 and RS232.
  • Single chip USB to UART conversion.
  • No additional firmware programming required.
  • Receive and Transmit LED drive signals.
  • USB2.0 full speed compatible.
  • Low USB bandwidth consumption.
  • Internal EEPROM with user writable area.
  • Output can be directly connected to microcontroller UART or I/O.
  • Entire USB protocol handled by the electronics in the cable.
  • Integrated power-on-reset circuit.
  • UART signal inversion option.
  • True 5V/3.3V/2.8V/1.8V CMOS drive output and TTL input.
  • Operating temperature range: -40ºC to +85ºC.
  • 128 byte receive buffer and 256 byte transmit buffer, utilizing buffer smoothing technology to allow for high data throughput.
  • Cable length up to 6 feet.
  • FCC and CE compliant.


  • Upgrading legacy peripherals to USB.
  • USB industrial control.
  • Interfacing MCU/PLD/FPGA based designs to USB.
  • USB wireless modems.
  • USB bar code readers.
  • USB software and hardware encryption dongles.
  • USB flash card reader and writer.
  • USB to RS232/RS422/RS485 converters.



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