Document Reference No.: FT_000077
USB TO RS232 SERIAL CONVERTER RANGE OF CABLES Datasheet Version 1.3
Clearance No.: FTDI# 51
5.2 USB-RS232-WE Cable Signal Descriptions
Colour
Black
Brown
Name
GND
CTS#
Type
GND
Input
Description
Device ground supply pin.
Clear to Send Control input / Handshake signal.
Power output. Default is GND, but can be customised to
Red
POWER
Output
output +3.3V or +5V. If required, contact FTDI Sales Team
Orange
Yellow
Green
TXD
RXD
RTS#
Output
Input
Output
Transmit Asynchronous Data output.
Receive Asynchronous Data input.
Request To Send Control Output / Handshake signal.
Table 5.1 USB-RS232-WE Cable Signal Descriptions
5.3 USB-RS232-WE Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
*Default is GND. This figure
only applies when cable has
been customised to output
VCC_5V
Output Power Voltage*
4.25
5.0*
5.25
V
+5V. The range is
dependent on the USB port
that the USB-RS232-WE is
connected to
**Default is GND. This
VCC_3.3V
Output Power Voltage**
3.2
3.3**
3.4
V
figure only applies when
cable has been customised
to output +3.3V.
***Only applies when
POWER output is customised
I O
Output Power Current***
-
75
mA
to +5V or+3.3V
Must be less that 2.5mA
during suspend.
C
T
Operating Temperature
Range
-40
+85
o
Table 5.2 USB-RS232-WE I/O Operating Parameters
Copyright ? 2010 Future Technology Devices International Limited
8
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