CH340G USB to Serial Converter Chip – USB to UART Bridge IC for Arduino and Embedded Projects
The CH340G is a USB to UART (serial) interface chip that enables communication between a computer’s USB port and serial devices like Arduino, ESP8266, ESP32, STM32, and other microcontrollers. It is a cost-effective and widely used alternative to FTDI chips, offering stable and reliable data transfer for development boards and embedded systems.
 
Key Features:
USB to Serial Communication
Converts USB signals to standard UART (TX/RX), enabling easy connection to microcontrollers.
Highly Compatible
Supported by Windows, Linux, and macOS. Works with Arduino IDE and other serial tools.
Compact DIP-16 Package
Easy to solder and ideal for breadboard and PCB-based circuits.
Full-Speed USB Support
Operates at USB 2.0 full speed (12 Mbps) for fast and reliable data transmission.
Low-Cost FTDI Alternative
Affordable solution for DIY electronics, USB programmers, and debug tools.
Integrated Clock and USB Interface
Requires minimal external components for simplified circuit design.
 
Applications:
Arduino USB interface circuit
USB to TTL modules
Serial communication in embedded systems
Flashing ESP8266, ESP32, STM32 boards
USB UART bridges in custom PCBs
USB debugging for IoT devices
 
Package Includes:
1 × CH340G USB to Serial Interface Chip 
 
Specifications:
Chip Model: CH340G
Function: USB to UART (TX/RX)
Interface: USB 2.0 full speed
Baud Rate: Up to 2 Mbps
Package Type: DIP-16
Operating Voltage: 3.3V to 5V
Driver Support: Windows, Linux, macOS
 
Dimensions:
Length: 19 mm
Width: 7 mm
Pin Pitch: 2.54 mm
 
Weight: 1 g
 
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