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file name	file content
CH341DS1.PDF	CH341 datasheet, USB bus converter chip with multiple communication interfaces, such as USB to serial port/parallel port/printer port/I2C interface etc. Drivers support for Windows/Linux/Android/Mac, etc. The datasheet is the description of USB to serial port and printer port.
CH340DS1.PDF	CH340 datasheet, USB bus converter chip which converts USB to serial port, printer port, IrDA SIR etc. Integrated clock, supports various operating systems, chip information can be customized, this datasheet is about USB to serial port and USB to Infrared Adapter SIR.
CH9326DS1.PDF	CH9326 datasheet, USB HID to serial port, built-in crystal oscillator, supports built-in HID driver in operating system.
CH9328DS1.PDF	CH9328 datasheet, serial port to USB HID keyboard, serial port to receive data, according to HID keyboard device specification, upload to computer via USB bus, no need to install driver.
CH9350DS.PDF	CH9350 datasheet. A controller chip that realizes USB keyboard/mouse to UART communication. The transmission distance is extended through UART. It is convenient for KVM products to manage and control USB keyboard and USB mouse remotely.
CH382DS0.PDF	CH382 Brief, which converts PCI-Express bus to dual serial ports, and printer/parallel port. Supports up to 8Mbps baud rate, used for PCIE high-speed serial port with automatic hardware flow control, serial ports networking, RS485 communication, parallel/printer port expansion, etc.
CH351DS1.PDF	CH351 datasheet, PCI bus to dual serial ports or printer port chip, used for PCI to dual serial ports, PCI to printer port (parallel port). Supports Windows/Linux/macOS, etc.This datasheet is about PCI to dual serial ports.