USB-COM485-PLUS2 FTDI, USB-COM485-PLUS2 Datasheet - Page 2

• Manufacturer Part Number: USB-COM485-PLUS2
• Description: Interface Modules & Development Tools USB HS to RS485 Conv Assembly 2 DB9 Ports
• Manufacturer: FTDI

Specifications of USB-COM485-PLUS2

• Interface Type: USB, RS-485
• Data Bus Width: Serial
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• For Use With/related Products: FT2232H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: USB-COM485-PLUS-2

Document Reference No.: FT_000136
USB-COM485-PLUS2 Datasheet
Version 1.2
Clearance No.: FTDI#104
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Introduction
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Functional Description
The USB-COM485-PLUS2 is a USB to a dual interface RS485 level serial UART adaptor incorporating
FTDI’s FT2232H Hi-Speed USB2.0 (480Mb/s) to dual serial UART interface IC device. The FT2232H
handles all the USB signaling and protocols. The adaptor provides a fast, simple way to connect devices
with an RS485 interface to USB.
USB-COM485-PLUS2 is a USB to a dual-port RS485 adapter.
The integrated electronics of the USB-COM485-PLUS2 utilise the FTDI FT2232H and includes RS485 level
shifters plus TXD/RXD LEDs to provide a visual indication of data traffic through the module.
Figure 1.1 USB-COM485-PLUS2
The module uses a standard USB-B device connector for connection to an upstream host or hub port.
RS485-level signals are available on an industry-standard DE-9P connector. The maximum RS485-level
data rate is 10Mbps.
The USB-COM485-PLUS2 module requires USB device drivers, available free from www.ftdichip.com,
which are used to make the USB-COM485-PLUS2 appear as a Virtual COM Port (VCP). This allows existing
serial communications software, such as HyperTerminal, to exchange data through the USB-COM485-
PLUS2 to a legacy RS485 peripheral device.
Copyright © 2010 Future Technology Devices International Limited
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