This module is designed based on the CH348Q chip, which is a high-speed USB 2.0 bus adapter chip that realizes the function of converting USB to 8 asynchronous serial ports UART0/1/2/3/4/5/6/7. The CH348 USB to 8-channel 3.3/5V TTL serial port module uses a Type-C interface as input and supports 8-channel 3.3/5V TTL serial ports. It is suitable for connecting and communicating multiple serial port devices and is widely used in embedded development, serial communication debugging, industrial control, and other scenarios.

Module type: USB to 8-channel 3.3/5VTTL serial port module
Type-C input voltage: DC 5V
VCC output voltage: DC 3.3/5V (adjustable with toggle switch gear)
TTL communication level: DC 3.3/5V (adjustable with toggle switch)
Communication baud rate: Supports 1200bps~6Mbps
Indicator light: 1. Power indicator light (chip 3.3V power supply, red)
2. USB device configuration completion indicator light (green)
3. Each serial port is equipped with transmit (TX, red) and receive (RX, green) indicator lights, which display real-time data transmission status
Protection measures: 1. Input overcurrent protection (maximum current 500mA)
2. ESD protection (anti-static ability of ± 6kV)
Working temperature: -25 ° C~85 ° C
Module interface: Type-C, XH2.54-4P terminals
Module weight: 19g
Module size: 69.0 x 50.0 x 7.7 mm (length x width x height)
Fixed hole diameter: 3mm

V: Power output positive pole VCC: 3.3/5V
R: Receive data pin RXD
T: Send data pin TXD
G: Power output negative GND

Type-C: 5V power supply and USB signal input
A-H ports: 8 independent 3.3/5V serial ports
500mA self recovering fuse: provides input overcurrent protection, maximum current 500mA
Toggle switch: controls VCC output voltage and RX, TX communication levels
3.3V→VCC:3.3V; RX、TX:3.3V
5V→VCC: 5V; RX、TX: 5V