DB9-USB-RS232 Modules

FTDI's DB9-USB-RS232 modules are designed to directly replace an existing DB9 (the industry accepted name for a DE9 connector) RS232 connection with a drop-in USB replacement connection. Pin for pin, these modules will replace a male or female DB9 RS232 connector with a USB mini-B connector. The application PCB containing the existing DB9 RS232 connector does not require any modification, only the replacement of the D-type connector with the appropriate DB9-USB-RS232 module. A male DB9 should be replaced by a male DB9-USB-RS232-M and a female DB9 should be replaced by a female DB9-USB-RS232-F. The modules contain all necessary electronics to convert between USB and RS232.

The purpose of the modules is to provide a simple method of adapting legacy serial devices with RS232 interfaces to modern USB ports by replacing the DB9 connector with this miniaturized module that closely resembles a DB9 connector. This is accomplished by incorporating the industry standard FTDI FT232R USB-Serial Bridge IC plus the required level shifters inside the module.

The module uses a standard USB-MINI-B connector for connection to an upstream host or hub port. RS232-level signals, including modem handshake signals, can transmit data at rates up to 1MBd.

Features

• Adds one USB serial port by connecting to the RS232 DB9 footprint of a device
• Easy placement for an standard male and female RS232 DB9 footprint of a device
• Works with USB 1.1 & 2.0 host and hub ports
• Industry standard FTDI chip set and device drivers for maximum compatibility
• Microsoft Windows® WHQL-certified, Mac OS X, Linux and Windows CE device drivers
• Installs as a standard Windows COM port
• Supports Windows servers 2008, 2003, Vista, XP 2000, Linux, Mac OS X
• 128 byte transmit buffer, 256 byte receive buffer
• RS-232 data signals: TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
• Powered by USB port. No external power adapter required.
• Serial port speed up to 1 Mbps
• Serial communication parameters
  
  • Parity: none, even, odd
  • Data bits: 7, 8
  • Flow control: RTS/CTS , DSR/DTR, X-ON/X-OFF, none
• Operating temperature of -40°C to +85°C