Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
WCH CH340B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- WCH CH340B
- Type
- WCH
- Minimum package
- 5000 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- WCH
- Electronic Component
- CH340B
- Electronic Component
- 1
- Package
- SOP-16
- Electronic Component
- USB Converter IC
- Electronic Component
- 0.28g
- Electronic Component
- 1
- Features
- Programmable; Built-in Clock Generator; positions
- Electronic Component
- BM0136831863
- Operating Voltage
- 3.3V；5V
- Operating Current
- 15mA
- Electronic Component
- Transceiver
- Data
- 2Mbps
- Static Current
- 200uA
- USB
- USB 2.0
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CH340B 产品概述
一、产品简介
CH340B 是南京沁恒（WCH）推出的一款高性价比 USB 转串口桥接芯片，专为嵌入式系统和各种需要串行通信的设备设计。该芯片采用 SOP-16 封装，尺寸为 150mil，方便在各种电路板上集成使用。CH340B 可广泛应用于计算机与各种外设之间的连接，提供了简洁的接口和可靠的性能，适合用于多种场合，包括工业控制、物联网设备、智能家居、打印机、调制解调器等。
二、主要特性
USB 2.0 兼容性: CH340B 支持 USB 2.0 技术，可以高速传输数据，确保与多种 USB 设备良好的兼容性。
多种串口参数支持: 该芯片支持波特率从 300 bps 到 6 Mbps 的串行通信，用户可以根据具体应用需求灵活配置。
内置的 EEPROM 和电平转换功能: CH340B 内置的 EEPROM 可以用来存储设备的配置信息，同时支持 5V 和 3.3V 的电平转换，适应多种电平要求的外设，大大增强了设备的兼容性。
低功耗设计: CH340B 的功耗设计合理，适合用于需要严控功耗的便携或小型设备。
简易驱动: 对于大多数操作系统，CH340B 可直接使用内置驱动，无需用户安装额外的驱动程序，简化了设备的使用过程。
三、应用场景
工业控制: 在工业设备中，CH340B 可用作工控机与各种传感器、PLC 控制器之间的通信桥梁，实现数据的实时传输与控制。
物联网设备: 在物联网应用中，CH340B 可以实现物联网网关与终端设备之间的串行数据传输，帮助数据的采集与监控。
智能家居: 在智能家居产品中，CH340B 可用作智能开关、家用电器等产品的通信接口，提升家庭自动化系统的灵活性与可扩展性。
云打印: 在云打印解决方案中，CH340B 可为打印机提供稳定的串口通信连接，实现与计算机或网络的无缝对接。
调制解调器与通信设备: 作为调制解调器的接口芯片，CH340B 能够高效地处理数据流，确保数据的稳定传输。
四、技术规格
- 封装形式: SOP-16 (150mil)
- 工作电压: 3.3V 或 5V
- 最大传输速率: 6 Mbps
- 串口支持: 全双工 UART 接口
- 工作温度范围: -40°C 至 +85°C
五、结论
CH340B 是一款灵活、功能强大的 USB 转串口桥接芯片，凭借其优异的性能和广泛的应用场景，为嵌入式开发和各种应用提供了有效的解决方案。其简单易用的特性和支持多种波特率的能力，使得开发人员能够在不同的应用领域中，更加高效地实现设备之间的数据传输与通信。无论是在工业控制、物联网，还是智能家居等领域，CH340B 均能为相关产品提供优秀的串口连接支持。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
1 Piece BGA Integrated Circuit Chipset MN864739 CXD90061GG CXD90062GG PS5 QFN-80
- Model
- MN864739
- Package
