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Document Reference No.: FT_000204
DB9-USB Datasheet
Version 2.0
Clearance No.: FTDI# 130
DB9-USB modules use a standard USB-MINI-B connector for connection to an upstream host or hub port.
RS232 Level : RS232 level signals, includes modem handshake signals, and capable of transmitting data
at rates up to 1 Mega Baud.
Digital Level : 3.3V or 5V level signals, includes modem handshake signals, and capable of transmitting
data at rates up to 3 Mega Baud.
DB9-USB modules require USB device drivers, available free from www.ftdichip.com, which are used to
make DB9-USB modules appear as a Virtual COM Port (VCP). This allows existing serial communications
software, such as HyperTerminal, to exchange data through the DB9-USB to a legacy UART peripheral
device.
1.3 Background
In the long distant past, there was no standard defined for the connections on a DB9 connector when it
was used as an RS232 interface. That changed when IBM introduced the PC-AT. This introduced a
generally accepted DB9 RS232 standard and PC peripherals adopted the same pin-out using a 1-to-1
cable connection between the PC and the peripheral.
DB9-USB modules have adopted this standard. The DB9 connector wire schemes used by this module
either the standard male or standard female wire configuration.
Note that NOT ALL peripheral adopted this standard so it is important for the user to check against the
pin-out used for the male and female DB9-USB connectors.
Note: DB9 connectors are also known as DE9 connector since it consists of 9 pins in a size E
shell. However DE9 connectors are more commonly referred to as DB9 connector.
Copyright ? 2011 Future Technology Devices International Limited
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DB9-USB-D5-F 功能描述:界面模块 USB Mini-B Female 5V DB9 interface 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:
DB9-USB-D5-M 功能描述:界面模块 USB Mini-B Male 5V DB9 Interface 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:
DB9-USB-F 功能描述:界面模块 USB to RS232 Legacy Adapter DB9 Female 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:
DB9-USB-M 功能描述:界面模块 USB to RS232 Legacy Adapter DB9 Male 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:
DB9-USB-RS232 制造商:FTDI 制造商全称:FTDI 功能描述:DB9-USB-RS232 Module Male & Female
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DB9W4P500G00LF 功能描述:D-Sub混合触点连接器 DSUB PWR STB 9W4 PIN RoHS:否 制造商:FCI 触点布置: 位置/触点数量: 安装风格:Through Hole 安装角: 端接类型:Solder