USB2-H-5004 EasySync, USB2-H-5004 Datasheet - Page 4

• Manufacturer Part Number: USB2-H-5004
• Description: USB Interface IC Hi-speed USB to 4prt Serial RS485 Adapter
• Manufacturer: EasySync

Specifications of USB2-H-5004

• Rohs: yes

Document Reference No.: ES_000031
USB2-H-5004 Hi-Speed USB to 4-Port RS485 Adapter Data Sheet
Version 1.1
#23
Clearance No.: ES
1
Introduction
1.1
Functional Description
The USB-COM-Plus adaptors are a family of communication devices. This model, USB2-H-5004, provides
a simple method of adapting legacy serial devices with RS485 interfaces to modern USB ports. This is
accomplished by incorporating the industry standard FTDI FT4232H USB-Serial bridge chip.
Each USB2-H-5004 adapter contains a small internal electronic circuit board which utilises the FTDI
FT4232H, mounted inside a rugged plastic enclosure capable of withstanding industrial temperature
ranges. The integrated electronics also include RS485 level shifters and TXD/RXD LEDs to provide a
visual indication of data traffic through the adapter.
Figure 1.1 USB2-H-5004
Flexible mounting allows the USB2-H-5004 to be used in a variety of applications, from a portable
adapter to accompany a laptop to permanent installations in industrial, commercial and retail locations.
The enclosure incorporates a standard USB-Mini-B client 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 USB2-H-5004 adapter require USB device drivers, available free from
http://www.easysync.co.uk
or
http://www.easysync-ltd.com, which are used to make the USB2-H-5004 appear as a Virtual COM Port
(VCP). This allows existing serial communications software, such as HyperTerminal, to exchange data
through the USB2-H-5004 to a legacy RS485 peripheral device.
Pin 9 of the D-sub connector can provide +5V power output with maximum 250mA (sum of all current
drawn on all 4 interfaces).
4
©2010 EasySync Ltd.