【选型】国产USB转串口转接芯片助力分子检测设备，兼容USB V2.0，支持通讯波特率50～2Mbps

时间： 2022-12-23 来源：世强

技术问答

分子检测设备的原理与PCR仪类似，通过对基因的扩增，从而实现对各种人类或动物体病菌病毒的检测，国内某客户在做一个小型的分子检测设备时，需要用到USB接口与外部进行数据传输，因此需要一个USB转串口的转接芯片，给客户推荐了沁恒的CH340E。

CH340E主要具有以下特点：

1、全速USB设备接口，兼容USB V2.0，仿真标准串口，用于升级原串口外围设备，或者通过USB增加额外串口。

2、硬件全双工串口，内置收发缓冲区，支持通讯波特率50bps～2Mbps，支持常用的MODEM联络信号RTS、DTR、DCD、RI、DSR、CTS，

3、通过外加电平转换器件，提供RS232、RS485、RS422等接口，支持5V电源电压和3.3V电源电压，CH340E内置时钟，无需外部晶振。

典型应用电路如下：

综上所述，CH340E可以满足客户设计需求，应用于分子检测设备的设计。

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型号- PL2303系列,FT232R,PL2303GL,CH9103M,CH343G,CH9143,FT230XQ,CH9102,CH9101,CP210X系列,CY7C65213,CH343K,FT230XS,CH347,CY7C65213系列,FT232RQ,CP2105,CP2104,CH9326,CP2109,CH341T,CP2102N-GQFN24,CP2102N-GQFN28,CH9104L,CH9342G,PL2303GC,CH9101系列,XR21B1422,CH342F,CH342K,CP2102,CH342,CP2101,CH344Q,CH340K,CH9101Y,PL2303HXD,CP210X,CH340N,CH9101N,CH340T,PL2303,CY7C65213(A),CH9101R,XR21V1414,CH9101U,CH9101H,CH341B,CH341A,CH341F,FT230X,FT232RL,CH343P,CH347T,CH9102X,CH9103,CH9340K,CH9340C,CH9344L,CH9102系列,CH340E,CH348L,CH340C,CH340B,CH348Q,CH344L,CH340G,CH9102F

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