CH340N SOP8 USB to serial port IC SOP-8

CH340N SOP-8 USB to Serial Port IC offers a compact and reliable solution for converting USB signals into standard serial interfaces. Its small SOP-8 package makes it ideal for space-constrained circuit boards, while its stable performance ensures smooth communication between microcontrollers and USB-enabled devices.

Key Features:

• USB to Serial Conversion: Bridges USB signals to UART/RS232-style serial communication.
• Low Pin Count: SOP-8 package keeps circuit layout simple and space-saving.
• Stable Data Transmission: Maintains reliable communication with low error rates.
• Wide Compatibility: Works with popular operating systems like Windows, Linux, and macOS.
• Integrated USB Transceiver: Eliminates the need for external USB interface components.
• Low Power Operation: Designed to run efficiently in embedded systems.

Technical Specifications:

• Operating Voltage: 3.3 V to 5 V
• USB Specification: Compliant with USB 2.0 full-speed (12 Mbps)
• Baud Rate Support: Up to 2 Mbps
• Interface: UART with configurable TXD and RXD pins
• Driver Support: Windows, Linux, macOS (vendor-provided and native drivers)
• Operating Temperature: −40 °C to +85 °C

Mechanical Specifications:

• Package Type: SOP-8 surface-mount
• Lead Finish: Tin-plated pins for secure soldering
• Body Material: Molded epoxy resin for durability
• Mounting Method: Surface-mount technology (SMT)

Dimensions:

• Package Width: ~3.9 mm
• Package Length: ~4.9 mm
• Lead Pitch: 1.27 mm
• Lead Length: ~0.5 mm

Pinout and Wiring:

• Pin 1: GND (Ground)
• Pin 2: TXD (Transmit Data)
• Pin 3: RXD (Receive Data)
• Pin 4: VCC (Power Input)
• Pin 5: UD+ (USB D+ line)
• Pin 6: UD− (USB D− line)
• Pin 7: RTS or configuration pin (depending on design)
• Pin 8: CTS or configuration pin (depending on design)
• Wiring Tip: Connect D+ and D− to the USB connector, VCC and GND to power, and route TXD/RXD to your microcontroller UART pins.

Datasheet Reference:

• Refer to the official WCH CH340N datasheet for detailed timing diagrams, driver installation guides, and complete electrical specifications.

Applications:

• Microcontroller Programming: Provide USB-to-UART bridges for Arduino, ESP8266, ESP32, and similar boards.
• Embedded Systems: Add USB connectivity to compact PCBs without large interface chips.
• Industrial Equipment: Use in diagnostic ports and control systems requiring serial communication.
• Consumer Electronics: Enable firmware updates and debugging interfaces through USB.

Equivalent Models:

• CH340G: Similar device available in a 16-pin package with additional features.
• FT232RL: Widely used USB to UART converter from FTDI.
• CP2102: Silicon Labs USB-to-serial IC with comparable functionality.

Package Includes:

• 1 x CH340N SOP-8 USB to Serial Port IC