FTDI cables connect RS-based peripherals to USBs
Future Technology Devices
USB-RS485-WE converter cable
Future Technology Devices (FTDI) has introduced two serial interface converter cables that connect RS-422- or RS-485-based peripherals to a PC's USB port.
Both the cables use FTDI's FT232RQ USB to asynchronous serial interface IC.
The USB-RS485-WE converter cable includes an RS-485 transceiver while the USB-RS422-WE cable utilises a RS-422 transceiver.
The far end of the 1.8M cables are wire ended (no connector).
With the electronics encapsulated in the USB connector, these cables provide a quick, easy and completely transparent method of supporting serial interface standards.
The complete USB protocol is managed within the FT232RQ device.
Additionally, royalty-free device drivers for the FT232RQ are available to download free from FTDI's website.
The VCP and D2XX drivers are available for most popular operating systems such as Microsoft Windows, MAC OS X and Linux.
The FT2232RQ provides a user-writeable EEPROM area.
This allows the cable's USB interface to be customised using FTDI's MPROG, again available from FTDI's website.
The internal EEPROM can be programmed in-circuit over the USB interface, without any additional voltage requirements.
The converter cables are ideal for a range of industrial applications such as instrumentation, machine control and data collection.
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