CH340C SMD IC Transceiver USB 2.0 2Mbps SOP-16

Features:

• CH340C is a USB bus conversion chip, it can realize USB to UART interface or USB to printer interface.
• CH340C, CH340E, and CH340B have built-in crystal, no external crystal.
• CH340C provides a common MODEM liaison signal, used to expand the UART interface of the computer or upgrade the common serial device to a USB bus directly.
• Full-speed USB device interface, compatible with USB V2.0.
• Hardware full duplex serial UART interface, built-in transmit-receive buffer, supports communication baud rate varies from 50bps to 2Mbps.
• Supports common MODEM liaison signal RTS, DTR, DCD, RI, DSR, and CTS.
• Emulate standard UART interface, used to upgrade the serial peripherals, or expand UART interface via USB bus.
• Through external level conversion chip provide further RS232, RS485, RS422 interface, etc.
• Original serial applications are compatible, without any modification in the Windows operation system.
• Software compatible with CH341, use the driver of CH341 directly.
• Support 5V and 3.3V power supply even 3V.
• Supported Low Power Consumption Mode.

Pin Assignments:

Specifications:

• Type: USB-to-Serial Transceiver IC
• USB Standard: USB 2.0 Full-Speed (12 Mbps)
• Serial Protocol: UART (Universal Asynchronous Receiver Transmitter)
• Max UART Baud Rate: 2 Mbps
• Package Type: SOP-16
• Operating Voltage(VCC): 3.3V to 5.0V
• Current Consumption: 8 mA at 5V
• I/O Voltage Levels:  3.3V and 5.0V logic levels.
• ESD Protection: Up to ±6 kV (HBM)
• Data Rate:
  • USB: Full-Speed (12 Mbps)
  • UART: Up to 2 Mbps (Programmable baud rate from 50 bps to 2 Mbps)
• Flow Control Signals: Hardware flow control (RTS/CTS, DTR/DSR).
• MODEM Signal Support: RTS, DTR, DCD, RI, DSR, CTS.
• USB Data Lines:
  • D+ (UD+): USB data positive
  • D- (UD-): USB data negative
• UART Interface Pins: TXD, RXD, and additional MODEM control signals.
• Driver Support: Compatible with CH341 driver for Windows, Linux, and macOS platforms.
• Crystal Oscillator: Internal oscillator integrated, no external crystal required.
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C
• Input Voltage: 0V to VCC
• Output Current:
  • High Level: 4 mA
  • Low Level: 8 mA

Applications:

• Upgrading serial peripherals to USB connectivity.
• Expanding UART interfaces via USB in embedded systems.
• Implementing USB-to-RS232, RS485, or RS422 conversions with external level-shifting components.
• Developing USB-based communication interfaces in microcontroller projects.

Datasheet:

Ch340 Datasheet