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USB to TTL serial cable with FTDI chip, 3.3V logic, 6ft length, 3.5mm stereo jack

SMUGDESK

SMUGDESK USB to TTL Serial Adapter Cable FTDI Chip 3.3V UART 6ft 3.5mm Stereo Audio Jack TTL-232R-3.3v-AJ

SKU CH-P2Z9-AE8SW

Converts USB to 3.3V TTL serial using an FTDI chip with a 6ft cable and 3.5mm stereo jack for embedded debugging

  • Authentic FTDI chip ensures stable USB to 3.3V TTL UART conversion
  • 3V logic level protects low-voltage MCUs and sensors from damage
  • 6ft cable with 3.5mm stereo audio jack plug offers flexible bench access
  • Plug-and-play on Windows, Linux and macOS enables immediate debugging
  • TTL-232R-3.3v-AJ specification suits router repair and IoT module development

FTDI USB-to-TTL cable 3.3 V 6 ft

This USB-to-TTL serial adapter uses an authentic FTDI chip to convert USB signals to 3.3 V UART levels. The six-foot cable ends in a 3.5 mm stereo audio jack matching the TTL-232R-3.3v-AJ specification for direct connection to compatible debug headers. Plug-and-play operation is supported on Windows, Linux and macOS, with automatic recognition on most current systems. It is intended for firmware flashing, hardware troubleshooting and serial data monitoring on low-voltage embedded hardware.

Embedded developers and router technicians

Engineers debugging 3.3 V microcontrollers, Bluetooth modules, Wi-Fi units or router firmware will find the voltage level and jack format convenient. Users whose target hardware requires 5 V TTL logic cannot connect this cable directly without an external level shifter. Projects needing a standard DB-9 or pin-header connector instead of a 3.5 mm jack will need a different adapter or a custom cable assembly.

3.3 V logic level output

The single decisive specification is the fixed 3.3 V TTL output voltage, which protects low-voltage MCUs and sensors but makes the cable unsuitable for 5 V systems unless a level shifter is added. Confirm that your device's 3.5 mm jack pinout matches the TTL-232R-3.3v-AJ assignment before connecting.

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Price $11.99
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Specifications

No published specifications for this item yet.

Questions about this item

What size audio jack does the 6ft cable end with?

The cable terminates in a 3.5mm stereo audio jack plug matching the TTL-232R-3.3v-AJ specification.

How is the driver installed on a modern operating system?

Most current Windows, Linux and macOS versions recognise the FTDI chip automatically; only older system releases may need a manual driver download.

When should the cable be replaced if used for 3.3V embedded debugging?

Replace the cable if the 3.5mm jack becomes loose, the insulation shows wear, or the FTDI chip fails to enumerate on a known-good host.

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