DS_USB_RS485_CABLES Datasheet, PDF (8/16 Pages) List of Unclassifed Manufacturers – 2 Cable Part Numbers

Document Reference No.: FT_000117
USB TO RS485 SERIAL CONVERTER CABLE Datasheet
Version 1.4
Clearance No.: FTDI #75
5.2 USB-RS485-WE Cable Signal Descriptions
Colour
Name
Type
Description
Black
GND
GND
Device ground supply pin.
Brown
Terminator 1
Input
Pin 1 of 120R Terminating Resistor. Only Required if
the USB-RS485-WE cable is the first or last device
in a multi-drop RS485 System, to meet RS485
Termination Requirements.
Default output is +5V when active, 0V during
suspend.
Red
POWER
Output
Power output can be customized to 0V, if required,
contact FTDI Sales Team ([e-mail]).
Switchable power to external device, 250mA max.
OFF during suspend
Orange
Data+(A)
Bi-Direction Data + (A) Signal
Yellow
Data-(B)
Bi-Direction Data - (B) Signal
Green
Terminator 2
Input
Pin 2 of 120R Terminating Resistor. Only Required if
the USB-RS485-WE cable is the first or last device
in a multi-drop RS485 System, to meet RS485
Termination Requirements.
Table 5.1 USB-RS485-WE Cable Signal Descriptions
5.3 USB-RS485-WE Electrical Parameters
Parameter Description
Minimum Typical Maximum
VCC_5V Output Power Voltage*
4.25
5.0*
5.25
IO
Output Power Current***
-
Operating Temperature
T
-40
Range
Table 5.2 USB-RS485-WE I/O Operating Parameters
*Default is 5V.
***Only applies when POWER output is 5V.
250
+85
Units
V
mA
o_C
Conditions
This only applies when
cable has been configured to
output 5V. The range is
dependent on the USB port
that the USB-RS485-WE is
connected to
Must be less that 2.5mA
during suspend.
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