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【PL2303 USB To TTL Core Conversion】 USB to TTL serial converter based on PL2303HX or PL2303TA chipset; USB 2.0 interface with stable driver support; converts USB to TTL level RX and TX signals; enables reliable firmware flashing and serial debugging for embedded boards and communication tasks
【Dual Logic Level Power Support】 Provides 3.3 V and 5 V TTL logic compatibility via onboard pin headers; supports mixed voltage target boards; VCC output available when needed while most flashing only requires RX, TX, and GND; reduces wiring complexity during setup and testing
【Integrated Protection And Status Indication】 Built‑in 500 mA self‑resetting fuse protects the adapter and host USB port from overcurrent; dual TX and RX indicator LEDs show real‑time data flow; helps confirm correct communication and simplifies troubleshooting during serial operations
【Compact Insulated Board And Cable Design】 Small form factor USB to TTL board with transparent heat‑shrink insulation; prevents accidental short circuits while keeping labels and LEDs visible; available as a 1.0 m cable version for flexible placement between computer and target device
【Wide System Compatibility And Clear Wiring】 Supports Windows 7, 8, and 10 with PL2303 driver installation; color‑coded wiring for easy connection with red VCC, black GND, green TXD, and white RXD; TTL signals only; not compatible with RS232 voltage levels

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Product Overview
USB to TTL Serial Programming Cable/Board based on PL2303HX or PL2303TA chipset. Provides stable USB‑to‑TTL level conversion for firmware flashing, serial debugging, and MCU programming. Widely used for routers, STB, GPS, and embedded development.

1. Product Parameters
Product Type: USB to TTL Serial Converter
Core Chip: PL2303HX / PL2303TA
USB Interface: USB 2.0
Logic Level: TTL 3.3 V / 5.0 V selectable
Cable Length: 1.0 m (download cable version)
Protection: 500 mA self‑resetting fuse
Indicators: TX/RX data LEDs
Operating Systems: Windows 7 / 8 / 10 and compatible systems
Packaging: Insulated heat‑shrink protection, ESD bag
2. Pin Function Description
Red (VCC): 5 V power output
Black (GND): Signal ground
Green (TXD): TTL transmit data output
White (RXD): TTL receive data input
3. Common Questions & Answers (FAQ)
Q1: Can this be used for router or firmware flashing?
A1: Yes, it is widely used for routers, ADSL modems, and device firmware upgrades.

Q2: Does it support 3.3 V and 5 V systems?
A2: Yes, the board provides both 3.3 V and 5 V TTL logic support.

Q3: Is VCC required during flashing?
A3: Usually no. Most flashing only needs RX, TX, and GND connections.

Q4: Are drivers required for use?
A4: Yes, PL2303 drivers must be installed on the computer before use.

Q5: How should RX and TX be connected?
A5: Connect TXD to target RX, RXD to target TX, and GND to GND.

مرحبًا،

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5 قطع PL2303TA USB إلى كابل محول تسلسلي TTL، محول RS232 UART، مخرج 3.3 فولت 5 فولت، 1 متر

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