The CH340C USB to Serial Converter IC - SOP16 is a full-speed USB to serial (UART) bus converter chip designed to enable USB communication for microcontrollers, embedded modules, and debugging tools. 3.3V – 5.0V DC.
The CH340C USB to Serial Converter IC - SOP16 is a full-speed USB to serial (UART) bus converter chip designed to enable USB communication for microcontrollers, embedded modules, and debugging tools. It converts USB bus signals to standard TTL serial UART signals, making it an essential component for programming and serial data transfer in microcontroller development boards.
Unlike older CH340 models, the CH340C features an internal integrated crystal oscillator, eliminating the need for an external 12MHz crystal and load capacitors. This significantly reduces overall board space, BOM cost, and design complexity.
Housed in a 16-pin SOP (Surface Mount) package, it supports hardware flow control, modem signals (RTS, DTR, etc.), baud rates from 50 bps to 2 Mbps, and both 3.3V and 5V logic levels. It is widely used on Arduino Nano/Uno compatible boards, ESP8266/ESP32 development kits, USB-to-TTL adapters, STC microcontrollers, and custom embedded DIY projects.
| Type | USB to UART / Serial Converter IC |
|---|---|
| Model | CH340C |
| Package Type | SOP-16 (Surface Mount / SMD) |
| Built-in Crystal | Integrated 12MHz internal oscillator (No external crystal required) |
| USB Protocol | USB 2.0 Full Speed (12Mbps) compatible |
| Baud Rates | Supports 50 bps to 2 Mbps |
| Operating Voltage | 3.3V – 5.0V DC |
| Hardware Handshaking | RTS, DTR, DCD, RI, DSR, CTS signals supported |
| System Compatibility | Drivers available for Windows, Linux, macOS, and Android |
What is the operating voltage?
3.3V – 5.0V DC.
Which interface does it use?
USB 2.0 Full Speed (12Mbps) compatible.
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, ESP8266, STM32 projects.
Can I buy the CH340C USB to Serial Converter IC in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
