[USB-003-RJ45] USB RS485/RS422 Converter (RJ45 type) HuMANDATA LTD.

[USB-003-RJ45] USB RS485/RS422 Converter (RJ45 type)

RoHS10 RS485 RS422 RJ45 Isolated SurgeProtection dmx512

USB to RS485/RS422 Converter
Available LAN cable

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USB-003-RJ45 is a USB to RS485/RS422 converter that isolated with 2500VDC between RS485/422 and a USB port. This converter is that it has the dip switch to enable and disable the built-in 120 ohm terminal resistor. This is designed around the high performance industry proven FTDI chipset. USB-003-RJ45はUSB-003のコネクタをRJ45としたものです。USB-003+ACC-005と同等です。

Upcoming Product



  • Supports RS485/RS422
    2-wire or 4-wire of RS485/RS422 selectable by the dip-switch
  • 2500VDC bus isolation
  • Baud rate up to 250Kbps
  • Supports custom baud rate
  • Auto transmit data control
    Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data
  • Built-in fail-safe bias resisters
  • Built-in 120 ohm terminal resistor selectable by the dip-switch
  • RJ45 connector
  • Pluggable the screw terminal
  • No external power supply is required
    USB-003-RJ45 is powered through a USB port (Bus-powered)
  • Reliable industrial grade design
  • ESD and surge protection
  • Housing material: Plastic
  • DIN rail, magnet, and screw mountable (Attachment is required)
  • Includes a USB cable (1.8m)
  • Non-use of 10 Restricted substances of RoHS directive


Item Description Remarks
Model USB-003-RJ45  
Input Power 5VDC
Supplied through a USB port (Bus-powered)
No external power supply required
Current Consumption Less than 100 mA  
I/O Interface RS485/RS422 (2-wire or 4-wire) ESD protection ±15KV ESD15kV
HOST Interface USB 2.0 compliant
(Support Full Speed)
USB 1.1 compatible
ESD protection
Baud Rate 300 bps to 250 Kbps Support custom baud rate
Data Bits 7 or 8 bit  
Stop Bits 1 or 2 bit  
Parity Even, Odd, No-parity  
FIFO RX Buffer Size 384 bytes  
FIFO TX Buffer Size 128 bytes  
Isolation Method Bus isolation  
Isolation Protection 2500VDC Designed value
Processor FT232BL FTDI
USB Driver Virtual COM port driver  
Support OS Windows 10/8.1/8/7/Vista/XP  
LED POW: USB bus power
RX: Receive data
TX: Transmit data
USB connector Standard Type B Female  
RS485/RS422 Connector RJ45 connector Available LAN cable
Operating Ambient Temperature 0 to 60 [°C] (32 to 140 [°F]) No condensation permitted
Operating Ambient Humidity 30 to 85%RH No condensation permitted
Storage Ambient Temperature -20 to 60[°C] (-4 to 140 [°F]) No condensation permitted
Storage Ambient Humidity 30 to 85%RH No condensation permitted
Weight Approx. 80 [g] Only main body
Dimensions 67 x 67 x 28 [mm]
(2.638" x 2.638" x 1.102")
Without projections

* Power saving function (suspend, standby, sleep and others) is not supported

RJ45 pinouts

Pin No Name Notes
RJ45 1 B Receive data +
2 A Receive data -
3 GND Signal ground
4 GND Signal ground
5 GND Signal ground
6 GND Signal ground
7 Z Transmit data +
8 Y Transmit data -

LAN Twisted Pair Cable Color Codes


  • 1-2 and 7-8 are a twisted pair
  • Make sure to use 8-core cable
  • The color codes might be different in the straight and cross cable

Package Contents

  • USB-003-RJ45
  • USB cable 1.8m
  • Driver & Application CD

Price and Optional Accessories

Description MODEL Image List Price
Stock Status
USB RS485/RS422 Converter Rev6
USB-003-RJ45 USB-003-RJ45
Attachment with clamping screw
PEN-003 PEN-003
Attachment for 35mm DIN rail
Attachment with neodymium magnet
PEN-003-MG PEN-003-MG

Accessories List

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© HuMANDATA LTD. - Altera & Xilinx FPGA Boards manufacturer in Japan - 2016