TTL-232R-3V3
Overview
The TTL-232R-3V3 is a USB-to-TTL serial UART converter cable incorporating the FT232RQ IC to handle all USB signaling and protocols. It provides a simple way to connect devices with 3.3V TTL level UART interfaces to USB, appearing as a standard COM port on the host computer. The cable is 1.8 meters long and terminated with a 6-pin SIL connector providing access to Tx, Rx, RTS, CTS, VCC, and GND.
Why Choose This Part
The cable handles the entire USB protocol internally, requiring no USB-specific firmware programming on the target microcontroller. It supports data transfer rates from 300 baud to 3 Mbaud and includes 5V safe TTL inputs, making it resilient when interfacing with various logic levels.
Applications
Key Specifications
Getting Started
Install the royalty-free FTDI Virtual COM Port (VCP) drivers to allow the cable to appear as a standard serial port in any terminal emulator or custom application. Connect the 6-pin header to your target UART, ensuring the 3.3V VCC pin is used only if the target requires power from the USB bus.
TTL-232R-3V3 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Convert To (Adapter End) | Convert From (Adapter End) | Stock |
|---|---|---|---|
| TTL-232R-3V3 (this part) | PCB | USB - A 2.0 Female | — |
| TTL-232R-3V3-WE | Cable, 6 Wire Leads | USB-A (USB TYPE-A).. | — |
