Copyright © 2010 Future Technology Devices International Limited

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Document Reference No.: FT_000152

USB-COM422-PLUS4 Datasheet

Version 1.1

Clearance No.: 107

1.4 Features

Adds quad RS-422 serial ports by connecting to a USB 2.0 Hi-Speed interface.

Easy plug & play installation and RS-422 device connection

Works with USB 1.1 & 2.0 Host and Hub ports

Industry Standard FTDI chip set & device drivers for maximum compatibility

Microsoft Windows® WHQL-certified, Mac OS X, Linux and Windows CE device drivers

Installs as four standard Windows COM ports

COM port number can be changed to any available COM port number, to support HyperTerminal,

or any other serial communications software application running in Windows

Supports Windows Server 2008, 2003, Vista, XP, 2000, Windows CE, Linux, Mac OS X

FIFO: 2k byte transmit buffer, 2k byte receive buffer

RS-422 data signals: TxD+, TxD-, RxD+, RxD-, RTS+, RTS-, CTS+, CTS-, GND

Powered by USB port. No external power adapter required.

Serial port speed up to 10Mbps

Serial Communication Parameters

o

Parity: None, Even, Odd

o

Data bits: 7, 8

o

Flow control: RTS/CTS , X-ON/X-OFF, None

Four DE-9P male connectors

LEDs indicate USB Enumeration, RxD, TxD for monitoring port status & easy diagnostics

Operating temperature of -40°C to +85°C

1.5 Performance Figures

Parameter

Performance

USB Interface

480Mbps USB 2.0 High-Speed

RS422 Interface

Standard Windows baud rates (300bps to 921.6Kbps)

Custom baud rates (300bps to 10Mbps) through baud rate aliasing.

See FTDI Application Note: Configuring FT232R, FT2232 and FT232BM

Baud Rates

Max Cable Length

USB=5m, RS422=12m (for 10Mbps)

Table 1.2 - Performance Figures

Part Number

Description

USB-COM422-PLUS4

USB-COM-Plus Hi-Speed USB to quad-Port RS422 module

Table 1.3 - Ordering Information