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Document Reference No.: FT_000119
USB TO RS422 UART SERIAL CONVERTER PCB
Datasheet
Version 1.02
Clearance No.: FTDI#79
1
Description
The USB-RS422-PCB is a USB to RS422 level serial UART converter PCB incorporating FTDI’s FT232RQ
USB to Serial UART interface IC device which handles all the USB signalling and protocols. The PCB
provides a fast, simple way to connect devices with a RS422 interface to USB.
Each USB-RS422-PCB contains a small internal electronic circuit board, utilising the FT232R plus a USB
type-A connector. The FT232R datasheet, DS_FT232R, is available at http://www.ftdichip.com. The
integrated electronics also include an RS422 transceiver plus Tx and Rx LEDs which give a visual
indication of UART traffic.
The PCB is USB powered and USB 2.0 full speed compatible. Each PCB supports a data transfer rate up to
3 Mbaud and supports the FTDIChip-ID?, with a unique USB serial number programmed into the
FT232R. This feature can be used to create a security or password protected file transfer access using the
PCB. Further information and examples on this feature are available at http://www.ftdichip.com under
FTDIChip-ID Projects.
The USB-RS422-PCB requires USB drivers, available free from http://www.ftdichip.com , which are
used to make the FT232R on the PCB appear as a virtual COM port (VCP). This then allows the user to
communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another
FTDI USB driver, the D2XX driver, can also be used with application software to directly access the
FT232R on the PCB though a DLL. This is illustrated in the Figure 1.1.
Figure 1.1 Using the USB-RS422-PCB
1.1 Part Number
The following Table 1.1 gives details of the available USB-RS422-PCB.
Part Number
USB-RS422-PCB
Description
USB to RS422 level UART PCB
Table 1.1 USB-RS422-PCB Part Number
Copyright ? 2009 Future Technology Devices International Limited
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相关代理商/技术参数
USB-RS422-WE-1800-BT 功能描述:电缆组件 USB to RS422 Embeded Conv Wire End 1.8m RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red
USB-RS422-WE-5000-BT 功能描述:电缆组件 USB to RS422 Embeded Conv Wire End 5m RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red
USB-RS485-CC-LLLL-CU- 制造商:未知厂家 制造商全称:未知厂家 功能描述:2 Cable Part Numbers
USB-RS485-PCBA 功能描述:界面模块 USB to RS485 Embeded Converter PCB Assy RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-RS485-WE-1800-BT 功能描述:电缆组件 USB to RS485 Embeded Conv Wire End 1.8m RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red
USB-RS485-WE-5000-BT 功能描述:电缆组件 USB to RS485 Embeded Conv Wire End 5m RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red
USBS-BRPCB 制造商:Thomas & Betts 功能描述: 制造商:TE Connectivity 功能描述:
USBSCC 功能描述:USB接头 USB Self Closing Cap - no connector included RoHS:否 制造商:FCI 产品:USB Type A Connectors 标准:USB 3.0 端口数量: 位置/触点数量:9 型式:Female 电流额定值:1.8 A 安装风格:Through Hole 端接类型:Solder Pin 连接器类型:USB 3.0 Receptacle