【Three-Level Voltage Switching】 1.8V/3.3V/5V output levels selectable via jumper; compatible with for Arduino, STM32, ESP8266; ensures logic level matching for microcontroller projects
【Plug-and-Play Compatibility】 Driver-free operation on Windows, macOS, Linux; FTDI official driver automatically installed; supports UART communication with 7–8 data bits and 1–2 stop bits
【High-Speed Data Transmission】 Supports baud rates up to 3 Mbps; includes RTS/CTS hardware flow control to prevent data loss during high-speed communication
【Robust Protection Features】 ESD protection of ±15 kV on USB data lines; short circuit current limited to 500 mA; operates in wide temperature range from -40°C to +85°C
【Low Power Consumption】 Sleep mode current as low as 1 µA; 20 mA operating current under no load; suitable for battery-powered and energy-efficient applications

Product Parameters

Core Chip: FT232RL (FTDI , USB 2.0 Compatible)

Input Voltage: 5V DC (USB Bus Powered, Range 4.5V-5.5V)

Output Level: 1.8V/3.3V/5V TTL (Jumper-Selectable, ±5% Accuracy)

Communication Protocol: UART (Supports 7/8 Data Bits, 1/2 Stop Bits, No/Odd/Even Parity)

Baud Rate: 300 bps to 3 Mbps (Adaptive)

Protection: ESD Protection (±15kV on USB Data Lines), Short-Circuit Protection (Output Current ≤500mA)

Operating Temperature: -40°C to +85°C (Reliable)

Power Consumption: ≤20mA (Active), ≤1μA (Sleep Mode)

Connector: USB-A + 6-Pin 2.54mm Header (100mil Spacing)

Pin Functions

VCC: Output Power Positive (Jumper-Selectable 1.8V/3.3V/5V), Max Load 200mA.

GND: System Ground (Must Connect to Target Device).

TXD: Serial Data Transmit (Connect to Target Device's RXD).

RXD: Serial Data Receive (Connect to Target Device's TXD).

RTS#: Request to Send (Active Low, for Hardware Flow Control).

CTS#: Clear to Send (Active Low, for Hardware Flow Control).

DTR#: Device Ready (Active Low, for Auto-Reset During Programming).

3V3OUT: Fixed 3.3V Auxiliary Output (Max 50mA) .

FAQ

1.
Q: Computer Does Not Recognize Device (No COM Port)?

A: Uninstall third-party serial drivers (e.g., CH340) and install FTDI official drivers. Ensure direct connection to host USB port (not via Hub) .

2.
Q: Garbled Data or Packet Loss?

A: Verify jumper voltage matches target device (e.g., 3.3V for ESP32). Use standard baud rates (e.g., 9600, 115200) with

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