Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
WCH CH338F
Configuration
1 options
Configuration
Option 175475
Availability on request
Technical data
Product details
19
specifications
Core information
- Product name
- WCH CH338F
- Type
- WCH
- Minimum package
- 490 托盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- WCH
- Electronic Component
- CH338F
- Electronic Component
- 1
- Package
- QFN-32(4x4)
- Electronic Component
- USB Converter IC
- Electronic Component
- 0.847g
- Electronic Component
- 1
- Channel Count
- 7
- Features
- Built-in Clock Generator; positions
- Electronic Component
- BM0264993127
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 3.2V~3.4V
- Operating Current
- 140mA
- Electronic Component
- Transceiver
- Data
- 480Mbps
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CH338F 产品概述
一、产品简介
CH338F 是南京沁恒（WCH）推出的一款工业级 7 端口 USB2.0 高速集线器芯片，面向对可靠性和并发性能有严格要求的嵌入式与工业应用场景。芯片支持 USB2.0 高速 480Mbps 传输，全并发处理 7 个下行口，工作电压为 3.2V～3.4V（典型 3.3V），工作温度范围为 -40℃～+85℃，封装为 QFN-32 (4×4)。
二、主要特性
- 支持 USB2.0 高速（480Mbps）传输，兼容低速/全速设备。
- 高性能 MTT（Multi-Transaction Translator）模式，7 个下行口并发处理，优化带宽与响应性能。
- GANG 过流检测与分组电源控制，便于实现整组/单口电源管理与保护。
- 支持上行口交换（Upstream Port Switching）、USB 延长与隔离功能，灵活适配复杂拓扑。
- 支持 Type-C PD 电源管理接口，便于与现代 Type-C 系统集成。
- 内置时钟发生器与上电复位（POR），简化外围设计与系统启动可靠性。
- 低静态功耗（典型 280 μA）、运行电流约 140 mA（典型），适合工业长期在线应用。
三、典型应用
- 工业自动化与控制终端的 USB 外围扩展
- 医疗设备、测试测量仪器的多接口连接与数据采集
- POS、票务与自助终端的多设备接入与供电管理
- 嵌入式系统扩展坞、转接板与 Type-C 多口适配器
四、设计注意事项
- 电源：采用稳压 3.3V 供电，靠近芯片放置去耦电容（例如 0.1 μF + 1 μF）。
- USB 差分线：保证差分阻抗匹配（90 Ω 差分），走线对称、最小化串扰。
- ESD 与浪涌保护：外部上行/下行口建议增加 TVS、共模扼流圈与滤波元件以提高系统鲁棒性。
- 散热与地平面：QFN 底部建议焊接大面积热焊盘并连接地平面以利散热与信号完整性。
- Type-C PD：集成 PD 控制或配合外部 PD 控制器完成电源协商与保护策略。
五、封装与电气参数（摘要）
- 品牌：WCH（南京沁恒）
- 封装：QFN-32（4×4）
- 工作电压：3.2V～3.4V（典型 3.3V）
- 数据速率：USB2.0 高速 480 Mbps
- 通道数：7 个下行端口
- 工作电流：约 140 mA（运行）
- 静态电流：约 280 μA（待机）
- 工作温度：-40℃ ～ +85℃
CH338F 以工业级可靠性与完善的电源/过流管理能力，适合需要高并发 USB 接入与稳定供电的应用场合，为系统设计提供简洁而可靠的多口 USB 解决方案。若需详细原理图、时序或寄存器说明，请参考芯片数据手册。
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.
