[USB-003 Rev6] USB RS485/RS422 Converter HuMANDATA LTD.

[USB-003] USB RS485/RS422 Converter  Rev6

RoHS10 CE RS485 RS422 TB Isolated SurgeProtection dmx512
NonChemi-Con Flame-retardant-ABS

Our best-selling USB to RS485/RS422 Converter
CE,RoHS compliance.

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USB-003 is a USB to RS485/RS422 converter that isolated with 2000VDC 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 is CE and RoHS compliance. CE



  • Supports RS485/RS422
    2-wire or 4-wire of RS485/RS422 selectable by the dip-switch
  • 2000VDC 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
  • Pluggable the screw terminal
  • No external power supply is required
    USB-003 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)
  • RoHS and CE compliant


Item Description Remarks
Model USB-003  
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 2000VDC 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 Pluggable the screw terminal 5pin (PHOENIX CONTACT) 5mm pitch
Operating Ambient Temperature -10 to 60℃ (14 to 140 [°F]) No condensation permitted
Operating Ambient Humidity 30 to 85%RH No condensation permitted
Storage Ambient Temperature -20 to 55℃ (-4 to 131 [°F]) No condensation permitted
Storage Ambient Humidity 30 to 85%RH No condensation permitted
CE Compliant EMS:EN61000-6-2
- IEC61000-4-2 Electrostatic discharge requirements
- IEC61000-4-3 Radiated electromagnetic field requirements
- IEC61000-4-4 Electrical fast transient burst requirements
- IEC61000-4-5 Surge immunity test requirements
- IEC61000-4-6 Conducted radio frequency requirements EMI:EN61000-6-4
- CISPR11 Group 1 Class A Emissions
This product has applied the common standard for industrial environment EN61000-6-2 and EN61000-6-4
Weight Approx. 90 [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

Interface Termianl (RS485/RS422 PIN ASSIGNMENT)

Pin No Signal Direction Notes

A (RD+)

IN Receive data +

B (RD-)

IN Receive data -
3 GND - Signal ground
4 Y (SD+) OUT Transmit data +
5 Z (SD-) OUT Transmit data -

Package Contents

  • USB-003
  • 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 USB-003
Attachment with clamping screw
PEN-003 PEN-003
Attachment for 35mm DIN rail
Attachment with neodymium magnet
PEN-003-MG PEN-003-MG
5P Terminal to RJ45
Convert Adapter
ACC-005 ACC-005
Detachable 5P Terminal Connector
1757048 (Phoenix)
(Additional purchase)

Accessories List

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