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  • USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T
  • USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T
  • USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T
  • USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T
  • USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T
  • USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T
USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T

USB to serial port chip IC CH340 CH340C CH340B CH340E CH340G CH340N CH340S CH340T

  • 10 - 99 Pieces
    $0.75
  • 100 - 999 Pieces
    $0.50
  • 1000 - 4999 Pieces
    $0.25
  • >= 5000 Pieces
    $0.10

USB to serial port chip IC CH340 CH340C CH340B CH340E CH340G CH340N CH340S CH340T

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • USB to UART Conversion: Enables seamless communication between USB devices and serial ports, facilitating data transfer in electronic systems.
  • Low Power Consumption: Optimized for battery-operated devices and power-sensitive applications, ensuring efficiency without compromising performance.

Key features

  • 1. Material Technology

  • With semiconductor-based construction and durable plastic packaging, ensure reliable performance in electronic devices. The surface-mount design allows for compact integration into PCB layouts, outperforming traditional through-hole components in space-constrained designs*.

  • 2. Interactive Design

  • With an intuitive interface design, simplify integration into projects with minimal external components required. Reduces setup time by up to 30% compared to complex solutions*, making it ideal for DIY and prototyping.

  • 3. Performance Parameters

  • With low power consumption technology, extend battery life in portable devices. Operates at 50% lower power than competing chips*, ensuring efficiency in battery-powered applications.

  • 4. Scenario Solutions

  • With versatile application support, adapt seamlessly to programming, prototyping, and data communication needs across environments. Compatible with over 90% of common microcontroller platforms*, enabling rapid development in diverse projects.

  • 5. Certification Standards

  • With compliance to industry standards, ensure reliability and safety in certified applications. Meets standard requirements for electronic components*, aligning with global manufacturing practices.

Product details

USB to serial port chip IC CH340  CH340C CH340B CH340E  CH340G CH340N CH340S CH340T

The CH340 series USB to serial port ICs are compact, surface-mountable solutions for seamless USB-to-UART communication. Designed for versatility and efficiency, these chips support a wide range of applications, from prototyping to industrial use. Their low power consumption and minimal external components make them ideal for battery-powered devices and space-constrained designs.

Technical specifications

FeatureSpecificationBenefit
InterfaceUSB 2.0 to UART ConverterEnables bidirectional communication
Package Type14-pin DIP (Surface Mountable)Compatible with high-density PCB layouts
Power Consumption< 100mW (Active), < 10µW (Sleep Mode)Optimized for battery-operated devices
Baud RateUp to 3 MbpsSupports high-speed data transfer
CompatibilityWindows, macOS, LinuxCross-platform usability
Operating Voltage3.3V to 5.5VFlexible power supply options

Customization guide

Adjustable parameters include baud rate (up to 3 Mbps), parity settings, and flow control to tailor communication protocols for specific applications. For specialized needs, consult our engineering team to modify voltage thresholds or integrate custom firmware.

Get inspired

From DIY projects to industrial automation, the CH340 series simplifies serial communication. Use it to program microcontrollers, build IoT devices, or create low-power data logging systems. Its ease of integration makes it a go-to for developers and hobbyists alike.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Data Transfer Rate1.2 Mbps+20% (1.44 Mbps)+40% (1.68 Mbps)
Power EfficiencyStandard-15% (Lower Idle)-30% (Lowest Idle)
Operating Temp Range0°C to 70°C-20°C to 85°C-40°C to 105°C
CertificationsRoHSRoHS + CERoHS + CE + FCC

Supplier's note

  1. Key Breakthroughs:

    • Low Power Consumption: The sleep mode (<10µW) extends battery life in IoT devices.
    • Universal Compatibility: Native support for Windows, macOS, and Linux eliminates driver headaches.
    • Compact Design: The 14-pin DIP reduces PCB space by 20% compared to legacy UART chips.
  2. Version Selection Guide:

    • Base Model: Ideal for basic applications like hobbyist projects or simple data logging.
    • Advanced Model: Choose for moderate industrial use (e.g., factory sensors) needing wider temperature tolerance.
    • Pro Model: Required for high-reliability scenarios (e.g., automotive diagnostics) where extreme temperatures or FCC compliance are critical.

With the Pro model’s -40°C to 105°C range, you can deploy systems in harsh environments. Pair its enhanced certifications with its low-power mode to ensure stable operation in remote IoT setups. For prototyping, the Base Model’s cost-effective design accelerates development cycles.

Frequently asked questions

  • Which CH340 series model is best suited for low-power IoT devices?

  • Is the CH340C USB to UART chip compatible with Windows 10 and Linux systems?

  • Can the CH340C be programmed to support custom baud rates for specific applications?

  • How does the surface-mount design of the CH340C enhance PCB layout efficiency compared to through-hole packages?

  • What applications benefit most from the CH340C’s USB to UART conversion capability?

  • Why is the CH340C considered user-friendly for hobbyists and developers?

  • How does the CH340C’s low power consumption advantage it in battery-operated projects?

  • Does the CH340C require any specific drivers for macOS compatibility?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Data Transfer RateHigh-speed IoT, real-time telemetryIndustry: 12 MbpsBase (CH340C): 12 MbpsAdvanced (CH340G): 24 Mbps▲
(doubles speed for high-throughput apps)
Power ConsumptionBattery-powered devices, portable toolsIndustry: 200 mWBase: 100 mW▲
(50% lower)
Advanced: 80 mW▲
(20% lower than Base)
Operating TemperatureIndustrial automation, automotive systemsIndustry: 0°C–70°CBase: -20°C–85°C▲
(broader range)
Advanced: -40°C–105°C▲
(extreme environments)
OS CompatibilityCross-platform projects, embedded systemsIndustry: Windows-onlyBase: Windows/Linux/macOS▲
(universal)
Advanced: +Android/RTOS▲
(full ecosystem)
Form FactorCompact PCBs, mass productionIndustry: Through-hole▲
(bulky, prototyping-friendly)
Base/Advanced: Surface mount▲
(space-efficient)
Through-hole may be easier for DIY prototyping▲
Configuration FlexibilityCustom baud rates, specialized protocolsIndustry: Fixed settingsBase: Adjustable baud rates▲Advanced: Full protocol customization▲
(parity/flow control)

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