Description
Product Overview
The PL2303HXD USB to TTL Serial Converter Module is a professional-grade 6-pin communication adapter designed to bridge the gap between your computer’s USB port and microcontrollers, routers, and embedded systems. This pink-colored module provides a reliable solution for programming, debugging, and serial communication with a wide range of devices including STC microcontrollers, STM32, ESP8266, ESP32, and routers.
At its core is the Prolific PL2303HXD chip, an enhanced version of the popular PL2303 series known for its stability and broad driver support. Unlike older versions (PL2303HX/HXA), the HXD variant features a built-in crystal oscillator eliminating external components, and supports higher baud rates up to 12Mbps. The chip fully complies with USB 2.0 specifications and integrates 5V to 3.3V voltage regulation.
This 6-pin version includes RTS and CTS hardware flow control pins in addition to the standard TXD, RXD, VCC, and GND. The extra flow control pins make this module ideal for applications requiring reliable data handshake, such as router configuration, GPS module interfacing, and industrial equipment communication. The module features a self-recovery fuse for overcurrent protection and indicator LEDs for power and data transmission status.
Key Features
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Enhanced PL2303HXD Chipset: Built-in crystal oscillator for improved stability; supports higher baud rates than older HX/HXA versions
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6-Pin Interface with Hardware Flow Control: Includes RTS and CTS pins for reliable data handshake – ideal for router configuration and industrial applications
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High-Speed Support: Baud rates from 75 bps up to 12 Mbps, significantly faster than standard USB-to-TTL adapters
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TTL Output Level: 3.3V logic with 5V tolerance on input pins – connects to both 3.3V and 5V target devices
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5V Power Output: Red wire provides up to 500mA from USB port for powering low-energy target devices
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Onboard Protection: Self-recovery fuse protects your computer’s USB port from accidental short circuits
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Windows Compatibility: Drivers support Windows 7, 8, 10, and 11 (with appropriate driver versions)
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Status LEDs: Visual indicators for power, TX (transmit), and RX (receive) activity for easy debugging
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Chipset | Prolific PL2303HXD |
| USB Compliance | USB 2.0 Full-Speed |
| Baud Rate Range | 75 bps – 12 Mbps |
| Logic Level | 3.3V (TTL, 5V tolerant inputs) |
| Power Output (5V) | Up to 500mA (derived from USB VBUS) |
| Power Output (3.3V) | Available (load not recommended) |
| Data Bits Support | 5, 6, 7, 8 |
| Stop Bits Support | 1, 1.5, 2 |
| Protection | Self-recovery overcurrent fuse |
| Supported OS | Windows 7, 8, 10, 11 / macOS / Linux |
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