The FTDI Chip TTL-232x USB to Serial UART (TTL level) converter cables provide a simple and fast way to convert microcontroller UART serial I/O to USB. The TTL-232R contains a small circuit board which includes the FT232x chip. Encapsulated in a USB-A connector, making the cable easy and straight forward to use. The circuit is powered from the USB +5 V power pins, and any Vcc connection is always at +5 V dc. However products are available with signal TTL logic levels of either +3.3 V or +5 V.
These cables are supported with Microsoft WHQL certified VCP drivers for Windows, Apple Mac, and Linux. All of which are available, royalty-free from the FTDI website. http://www.ftdichip.com

• USB 2.0 compatible
• Cable length: 1.8m
• Data transfer rate: Up to 3Mbps (FT232R parts), 12Mbps (FT232H parts)
• Unique serial number attached, used for security purposes whilst transferring files via cable
• Powered from USB connector
• Various UART-end connector options available
• CE and FCC compliant

USB connector with PCB only (no cables)
FTDI Chip TTL-232R-3V3-PCB (RS 429-284) +3.3 V UART signalling
FTDI Chip TTL-232R-5V-PCB (RS 429-278) +5 V UART signalling

USB connector and wire ended 6 core with 24 AWG output
FTDI Chip TTL-232RG-VSW3V3-WE (RS 715-8522) +3.3 V UART signalling
FTDI Chip TTL-232RG-VSW5V-WE (RS 730-0155) +5 V UART signalling
FTDI Chip TTL-232RG-VREG3V3-WE (RS 715-8529) +3.3 V UART signalling
FTDI Chip TTL-232RG-VREG1V8-WE (RS 715-8525) +1.8 V UART signalling
FTDI Chip TTL-232RG-VIP-WE (RS 715-8513) includes voltage reference for setting UART signalling levels
FTDI Chip TTL-232R-3V3-WE (RS 429-303) +3.3 V UART signalling (v1)
FTDI Chip TTL-232R-5V-WE (RS 687-7786) +5 V UART signalling (v1)

USB connector and 6 way, 0.1 inch single inline connector
FTDI Chip TTL-232R-3V3 (RS 429-307) +3.3 V UART signalling
FTDI Chip TTL-232R-5V (RS 687-7770) +5 V UART signalling

USB connector and 8-pin, keyed 2 mm pitch connector
FTDI Chip TTL-232R-3V3-2mm (RS 687-7780) +3.3 V UART signalling

USB connector and 3.5 mm audio jack connector
FTDI Chip TTL-232R-5V-AJ (RS 687-7774) +5 V UART signalling
FTDI Chip TTL-232R-3V3-AJ (RS 687-7783) +3.3 V UART signalling