CH340C USB to Serial Converter IC SOP-16

The CH340C is a highly integrated USB to Serial converter IC that allows seamless communication between USB and UART interfaces. Designed as a compact SOP-16 package, the CH340C includes an internal crystal oscillator circuit, eliminating the need for an external crystal, unlike its CH340G counterpart. It is widely used in embedded systems, development boards, and microcontroller applications where USB connectivity is required.

Key Features of CH340C USB to Serial Converter IC:

• • USB to UART Interface: Converts USB signals to standard serial UART signals.
  • Built-in Crystal Oscillator: No need for external crystal or oscillator components.
  • Full-Speed USB Support: Supports USB 2.0 full-speed communication.
  • Wide Voltage Compatibility: Works with 3.3V or 5V logic levels.
  • Compact SOP-16 Package: Space-efficient for surface mount designs.

Technical Specifications of CH340C USB to Serial Converter IC:

• • Interface: USB to UART.
  • Supported Baud Rates: 50bps to 2Mbps.
  • Operating Voltage: 3.3V to 5V.
  • Operating Temperature: -40°C to +85°C.
  • Package Type: SOP-16.
  • Integrated Oscillator: Yes (no external crystal required).
  • USB Protocol: USB 2.0 Full-Speed.

Mechanical Specifications of CH340C USB to Serial Converter IC:

• • Package: SOP-16 (Small Outline Package).
  • Pin Pitch: 1.27mm.
  • Material: Plastic epoxy resin, RoHS compliant.
  • Lead Finish: Tin-plated.
  • Mount Type: Surface Mount (SMT).

Dimensions:

• • Length: 10.2mm
  • Width: 7.5mm
  • Height: 1.75mm
  • Pin Pitch: 1.27mm

Mounting Options:

• • SMT (Surface Mount Technology): Suitable for reflow soldering on PCBs.

Schematic Diagram, Connection, Wiring and Pinout of CH340C USB to Serial Converter IC:

• • Pinout (SOP-16): Includes TXD, RXD, VCC, GND, D+, D−, CTS, RTS, etc.
  • Wiring: Connect USB lines (D+ and D−) to host, and TX/RX to target UART.
  • Connection: Ensure correct level translation for 3.3V/5V compatibility.

Datasheet of CH340C USB to Serial Converter IC:

• • Download CH340C Datasheet (PDF)

Applications of CH340C USB to Serial Converter IC:

• • Microcontroller Programming: Used in development boards like Arduino clones.
  • Embedded Systems: Provides serial interface for monitoring and debugging.
  • USB Devices: Adds USB support to legacy serial peripherals.
  • Prototyping Tools: Used in USB to TTL converter modules.
  • Sensor Modules: Enables data logging and communication with PCs.

Equivalent of CH340C USB to Serial Converter IC:

• • CH340G: Requires external crystal but otherwise functionally similar.
  • FT232RL: Premium USB to UART converter with more features.
  • CP2102: Silicon Labs USB to UART bridge IC.

Package Includes:

• • 1 x CH340C USB to Serial Converter IC SOP16