CH340G SOIC16 USB to Serial TTL-RS232 converter IC
CH340G SOIC16 USB to Serial TTL-RS232 converter IC
USB to Serial Interface IC – Full-Speed USB 2.0 Communication Controller
This USB-to-Serial interface IC is a versatile communication controller designed for embedded systems, industrial automation, USB-enabled peripherals, and serial communication applications. Supporting full-speed USB 2.0 operation, hardware full-duplex UART communication, MODEM signal control, and compatibility with RS232/RS485/RS422 interfaces through external level converters, the IC provides a compact and reliable solution for USB-based serial connectivity.
Why it’s a System Essential:
• Full-Speed USB 2.0 Interface: Provides reliable USB communication with minimal external components.
• USB-to-Serial Conversion: Easily upgrades legacy serial devices to USB connectivity.
• Wide Baud Rate Support: UART communication from 50bps up to 2Mbps for flexible serial applications.
• Hardware Full-Duplex UART: Ensures stable simultaneous data transmission and reception.
• MODEM Signal Support: Compatible with RTS, CTS, DTR, DSR, DCD, and RI control signals.
• Multi-Protocol Interface Expansion: Supports RS232, RS485, and RS422 using external level converters.
• Infrared Communication Support: Supports IrDA SIR infrared communication protocol.
Technical Specifications:
• USB Interface: Full-Speed USB 2.0 Device
• USB Compliance: USB Specification Version 2.0
• External Components Required: Crystal and Capacitors Only
Serial Communication Features:
• Hardware Full-Duplex UART Interface
• UART Baud Rate Range: 50bps to 2Mbps
• Transmit & Receive Buffer Integrated
MODEM Signal Support:
• RTS
• DTR
• DCD
• RI
• DSR
• CTS
Additional Interface Support:
• RS232 (via external level converter)
• RS485 (via external level converter)
• RS422 (via external level converter)
Infrared Communication:
• Supports IrDA SIR Standard
• Infrared Baud Rate: 2400bps to 115200bps
Compatibility Features:
• Compatible with Windows Serial Application Programs
• Software Compatible with CH341 Driver
• Supports Existing CH341 Drivers Directly
Power & Package Information:
• Supports 5V and 3.3V Supply Voltage
• Package Type: SSOP-20
• Lead-Free & RoHS Compliant
Features:
• USB-to-UART communication bridge
• High-speed serial data transfer
• MODEM signal compatibility
• Multi-interface expansion support
• Compact surface-mount package
• RoHS-compliant environmentally friendly design
Applications:
• USB-to-Serial adapters
• Embedded system communication
• Industrial automation interfaces
• Microcontroller programming interfaces
• RS232/RS485 communication systems
• Infrared communication devices
• USB-enabled peripheral upgrades
• Data acquisition systems
• DIY electronics and prototyping
Best For:
Ideal for students, hobbyists, makers, engineers, and embedded developers working on USB communication systems, serial interface applications, industrial communication networks, microcontroller development, automation electronics, and embedded projects requiring reliable USB-to-UART connectivity.
Specifications
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