TTL-232RG - TTL to USB to serial converter generic cables

USB to serial converter cables which provide connectivity between USB and serial UART interfaces.

Each TTL-232RG generic cable contains a small internal electronic circuit board, utilising the FT232R, which is encapsulated into the USB connector end of the cable. The other end of the cable is wire ended. The cables can be used for "TTL" or interface logic over a range to voltage levels.

Cables are FCC, CE, RoHS compliant at TTL levels of +5V to +1.8V are being tested.

The USB side of the cable is USB powered and is USB 2.0 full speed compatible. Each cable is 1.8m long and supports a data transfer rate up to 3 Mbaud. Each cable supports the FTDIChip-ID™, with a unique USB serial number programmed into the FT232R. This feature can be used to create a security or password protected file transfer access using the cable.

The TTL-232RG generic cables require USB drivers, available free from, which are used to make the FT232R in the cable appear as a virtual COM port (VCP). This then allows the user to communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another FTDI USB driver, the D2XX driver, can also be used with application software to directly access the FT232R on the cable though a DLL.

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

  • TTL-232RG generic converter cable provides a USB to TTL Serial interface with various logic levels.
  • On board FT232RQ provides single chip USB to asynchronous serial data transfer interface.
  • Entire USB protocol handled by the electronics in the cable USB.
  • Connect directly to a microcontroller UART or I/O pins.
  • UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity.
  • Fully assisted hardware (RTS#/CTS#) or X-On / X-Off software handshaking.
  • Data transfer rates from 300 baud to 3 Mbaud at TTL levels.
  • Internal EEPROM with user writeable area.
  • Wide range of output drive voltages 1.8V to 5.0V safe TTL inputs makes the TTL-232RG easy to interface to 5.0V MCU‟s.
  • FTDI‟s royalty-free VCP allow for communication as a standard emulated COM port and D2XX "direct‟ drivers provide DLL application programming interface.
  • Support for FT232R FTDIChip-ID™ feature for improved security.
  • Voltage output power allows external logic to be powered from the USB port.
  • Cable can be used to accept IO voltage from application interface logic allowing users to supply IO voltage levels.
  • 6 way outputs provide Tx, Rx, RTS#, CTS#, VCC and GND.
  • Low USB bandwidth consumption. UHCI / OHCI / EHCI host controller compatible.
  • USB 2.0 (12Mb/s) Full Speed compatible.
  • -40°C to +85°C operating temperature range.
  • Cable length is 1.80m (6 feet).
  • Custom versions also available (subject to MOQ).
Part No. Description
TTL-232RG-VSW3V3-WE Supports +3.3V based TTL level UART signals and +3.3V / 50mA power output.
TTL-232RG-VSW5V-WE Supports +5V based TTL level UART signals and +5V / 450mA power output
TTL-232RG-VREG3V3-WE Supports +3.3V based TTL level UART signals and +3.3V / 250mA rated power output.
TTL-232RG-VREG1V8-WE Supports +1.8V TTL level UART signals and +1.8V / 100mA rated power output.
TTL-232RG-VIP-WE Cable features voltage reference input for setting UART signalling levels.

All cables are 1.8m in length.

Wire ended 6 core, 5mm UL2464 24 AWG output.

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Last updated: 14 May 2019