USB-COM232-PLUS4 FTDI, USB-COM232-PLUS4 Datasheet - Page 2

• Manufacturer Part Number: USB-COM232-PLUS4
• Description: Interface Modules & Development Tools USB HS to RS232 Conv Assembly 4 DB9 Ports
• Manufacturer: FTDI

Specifications of USB-COM232-PLUS4

• Interface Type: USB, RS-232
• Data Bus Width: Serial
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• For Use With/related Products: FT4232H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: USB-COM232-PLUS-4

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1.1
The USB-COM-Plus modules are a family of communication devices. This model, USB-COM232-PLUS4,
provides a simple method of adapting four legacy RS232 serial devices to a modern USB port. This is
accomplished by incorporating the industry standard FTDI FT4232H USB2.0 Hi-Speed serial bridge chip.
The integrated electronics of the USB-COM232-PLUS4 utilise the FTDI FT4232H plus four RS232 level
shifters and TXD/RXD LEDs to provide a visual indication of data traffic through the module.
Figure 1.1 USB-COM232-PLUS4
The module uses a standard USB-MINIB device connector for connection to an upstream host or hub
port. RS232-level signals, including modem handshake signals, are available on an industry-standard
DE-9P connector. The maximum RS232-level data rate is 1Mbps.
The USB-COM232-PLUS4 module requires USB device drivers, available free from www.ftdichip.com,
which are used to make the USB-COM232-PLUS4 appear as four Virtual COM Ports (VCP). This allows
existing serial communications software, such as HyperTerminal, to exchange data through the USB-
COM232-PLUS4 to a legacy RS232 peripheral device.
1.2
The USB-COM232-PLUS4 uses nine LEDs to indicate a valid link as well as data traffic according to the
following table:
Table 1.1 – LED Description
1.3
Colour
Yellow
Green
LED
Red
Introduction
Functional Description
LED Description
Block Diagram
Function
Enumerated
TxD Activity
RxD Activity
Copyright © 2010 Future Technology Devices International Limited
ON when USB-COM-Plus is configured and ready
Flashes when data is transmitted from the
the attached RS232 device
Flashes when data is transmitted from the attached RS232 device to
the
USB-COM232-PLUS4
Description
USB-COM232-PLUS4
Document Reference No.: FT_000148
USB-COM232-PLUS4 Datasheet
Clearance No.: FTDI# 97
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