CH340C SMD IC USB TO UART SOP-16 WCH CH340C

Product Overview:

A USB bus adapter integrated circuit designed to convert USB signals into serial (UART) signals. The CH340 is a widely used bridge chip that allows computers to communicate with serial devices like microcontrollers, printers, or legacy RS-232/RS-485 hardware.

Core Specifications:

• Manufacturer: Nanjing Qinheng Microelectronics (WCH)

• Package Type: SOP-16, SSOP-20, ESOP-10, etc.

• Function: USB to Serial (UART) Bridge

• Interface: USB 2.0 (Full-speed), UART (Serial)

• Operating Voltage: 5.0 Volts or 3.3 Volts

Features:

• Full Speed: Compliant with USB 2.0 specifications.

• Driver Compatibility: Works with standard Virtual COM Port (VCP) drivers on Windows, making it compatible with existing serial applications without needing software changes.

• High-Speed UART: Supports communication speeds from 50 bps up to 2 Mbps.

• Full-Duplex: Features built-in transmission and reception buffers for stable data handling.

• Modem Signals: Supports standard modem communication pins including RTS, DTR, DCD, RI, DSR, and CTS.

• Flexible Conversion: Can be paired with external level shifters to support RS-232, RS-485, or RS-422 standards.

Applications:

• Development Boards: A standard choice for providing USB-based programming and debugging on Arduino and similar microcontroller platforms.

• Hardware Upgrades: Allows older serial-only equipment to connect directly to modern computers via USB.

• Embedded Systems: Used for data logging or communication between embedded controllers and a PC.

• Industrial Automation: Frequently used in USB-to-RS485 converters for communication with industrial sensors and control modules.