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USB modules cuts need for external power adapter

Posted: 22 Sep 2009 ?? ?Print Version ?Bookmark and Share

Keywords:communication module? interface? USB 2.0?

USB-COM232 module

Future Technology Devices International Ltd (FTDI) has launched multi-port variants of its USB-powered USB-COM-PLUS family of communication modules. Complementing the previously released single-port USB-COM232-PLUS1 module, these new modules are available in RS232 (EIA-232), RS422 (EIA-422) or RS485 (EIA-485) versions. The USB-COM232 modules provide either dual or quad port options. The USB-COM422 and USB-COM485 modules provide dual port capability for the RS422 differential and RS485 single-port versions. Single port versions of these interface modules are also available.

All multiport modules feature a USB 2.0 Hi-Speed (480Mbit/s) interface and are powered from the USB port, saving the need for an additional external power adapter and associated costs. PCB-mounted LEDs provide indication of USB enumeration, RxD and TxD signals. The complete USB protocol and all level shifting are handled by the modules without the need for any application software modifications. Also, royalty-free WHQL approved drivers are available for all popular OS platforms, further aiding installation and deployment.

The USB-COM485 family feature a + 5V output that can provide up to 250mA. This can be used to supply interface logic of customer-attached equipment.

The dual and quad port modules use FTDI's FT2232H and FT4232H ICs. These 480Mbit/s USB2.0 Hi-Speed devices are configured as asynchronous serial interfaces together with an appropriate level shifter circuit.

The whole range of modules can operate from -40C to +85C and are CE/FCC approved.

The modules range in price from $19 to $60 for single unit orders.

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