SparkFun

FTDI to USB C Cable - 3.3V

Name: FTDI to USB C Cable - 3.3V
Brand: SparkFun
SKU: SF-CAB-14909
Price: 52.25 AUD
Availability: InStock

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USB C is quickly becoming more and more prominent in the maker community because, let’s be honest, who likes trying three times to insert USB into a port? Th...

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USB C is quickly becoming more and more prominent in the maker community because, let’s be honest, who likes trying three times to insert USB into a port? This FTDI cable is a USB C to Serial converter which allows for a simple way to connect TTL interface devices to USB. Each 26AWG cable is one meter in length with the USB C side protected by a 2in enclosure.

The FTDI cable is designed around an RS232, which is housed in a USB C connector. The other side of the cable is terminated with a 0.1" pitch, 6-pin connector with the following pinout: RTS (Green), RX (Yellow), TX (Orange), VCC 3.3V (Red), CTS (Brown), GND (Black). This FTDI to USB C Cable is also capable of handling high voltages up to 300V max.

There are pros and cons to the FTDI Cable vs the FTDI Basic. The FTDI Basic has great LED indicators, but requires a Mini-B cable. The FTDI Cable is well protected against the elements, but is large and cannot be embedded into a project as easily. The FTDI Basic uses DTR to cause a hardware reset where the FTDI cable uses the RTS signal.

Jargon buster

Plain-language definitions for the technical terms used above.

CTS: CTS stands for Clear To Send, a serial flow-control signal that tells the other device it may transmit. It matters for reliable high-speed serial communication where buffers could otherwise overflow.
GND: GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
LED: A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
RTS: RTS stands for Request To Send, a serial flow-control signal used to manage when a device is ready to receive data. It matters when moving fast serial streams because flow control can help prevent lost data.
RX: RX means receive, usually showing data being received by the board. An RX indicator LED can help with troubleshooting USB or serial communication.
TX: TX means transmit, usually showing data being sent from the board. A TX indicator LED can help you see when the board is communicating or uploading code.
VCC: VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.

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