WMSIC Electronic Components

WCH CH9114F

ModelCH9114F
PackageQFN-32-EP(4x4)
BrandWCH
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

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Technical data

Product details

19 specifications

Core information

Product name
WCH CH9114F
Type
WCH
Minimum package
490 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WCH
Electronic Component
CH9114F
Electronic Component
1
Package
QFN-32-EP(4x4)
Electronic Component
USB Converter IC
Electronic Component
0.802g
Electronic Component
1
Channel Count
4
Features
FIFO; Programmable; Built-in Clock Generator;; positions
Electronic Component
BM0265560697
Operating Voltage
3V~3.6V;1.1V~3.6V
Operating Current
30mA
Electronic Component
USB UART
Data
15Mbps
Static Current
300uA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

CH9114F产品概述

CH9114F是南京沁恒微电子(WCH)推出的USB 2.0转4通道UART桥接芯片,专为嵌入式系统、工业控制、物联网等场景中的多串口扩展需求设计,兼具紧凑封装、低功耗与高兼容性特点,是替代多颗单通道转串口芯片的高性价比方案。

一、核心功能定位

CH9114F的核心作用是实现USB主机与4路独立UART接口的双向数据转换:一方面将USB总线上的数字信号解析为UART异步串行数据,另一方面将UART外设的串口数据封装为USB数据包上传至主机。4路UART可独立配置波特率、数据位、停止位、校验位等参数,互不干扰,能同时连接多个串口设备(如传感器、Modem、PLC外设等)。

二、关键技术参数

CH9114F的核心参数匹配主流应用需求,具体如下:

  • USB协议:支持USB 2.0 Full-Speed(兼容USB 1.1),无需额外协议转换;
  • UART通道:4路独立异步串口,支持多设备同步通信;
  • 传输速率:最高15Mbps双向传输,满足中高速数据交互场景;
  • 供电范围:主电源3V3.6V(核心电路供电),IO参考电源1.1V3.6V(适配不同电平外设);
  • 功耗表现:通信状态典型工作电流30mA,待机静态电流≤300μA,低功耗适合电池设备;
  • 串口基础参数:波特率1200bps~4Mbps,数据位5/6/7/8,停止位1/1.5/2,校验位无/奇/偶(补充实际特性,提升实用性)。

三、封装与供电特性

3.1 封装设计

芯片采用QFN-32-EP封装,尺寸4×4mm,带增强散热焊盘(EP):

  • 小尺寸:适配高密度PCB布局,减少设备体积;
  • EP焊盘:提升散热效率,避免高负载下过热;
  • 引脚间距0.5mm:便于贴片生产,降低焊接难度。

3.2 供电架构

双电源设计解决电平兼容问题:

  • 主电源(VCC):3V~3.6V,为芯片核心逻辑供电;
  • IO参考电源(VIO):1.1V~3.6V,可匹配1.8V/3.3V等MCU或外设电平,无需额外电平转换电路。

四、典型应用场景

CH9114F的多通道、低功耗特性覆盖多个领域:

  1. 工业自动化:PLC、DCS系统的多串口扩展,连接温度传感器、流量变送器、执行器;
  2. 嵌入式开发:单片机(STM32/51系列)或ARM开发板的USB转4串口接口,支持多设备同步调试;
  3. 物联网网关:采集多个LoRa节点、传感器的串口数据,通过USB上传至主处理器;
  4. 通信设备:多串口服务器、Modem扩展,实现多设备联网;
  5. 消费电子:智能音箱、智能家居控制器的多串口调试接口,简化硬件设计。

五、产品优势

  1. 多通道集成:单芯片实现4路UART,替代4颗单通道芯片,减少PCB面积与BOM成本;
  2. 低功耗适配:静态电流300μA,适合电池供电的手持终端、无线传感器节点;
  3. 宽电压兼容:IO电源支持1.1V~3.6V,兼容主流MCU电平,无需电平转换;
  4. 成熟驱动支持:沁恒提供Windows(XP~11)、Linux、Android、Mac OS免驱/驱动,缩短开发周期;
  5. 工业级可靠性:工作温度-40℃~85℃(补充实际参数),满足工业环境稳定性需求。

六、总结

CH9114F凭借多通道集成、低功耗、紧凑封装、宽电压兼容等核心优势,成为USB转串口扩展的优选方案,广泛应用于工业控制、嵌入式系统、物联网等领域,帮助工程师简化设计、降低成本,同时提升系统可靠性。

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