Document Reference No.: FT_000054
TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.02
Clearance No.: FTDI# 53
6 TTL-232R-5V-WE and TTL-232R-3V3-WE Cables
The TTL-232R-5V-WE and TTL-232R-3V3-WE cables are both un-terminated; they are bare and tinned
wires. The difference between the two cables is that the TTL-232R-5V-WE operates at +5V levels (signals
and power supply) and the TTL-232R-3V3-WE operates at +3.3V levels (signals only, VCC=+5V).
6.1 TTL-232R-5V-WE, TTL-232R-3V3-WE Connections and Mechanical
Details
The following Figure 6.1 shows the cable signals and the wire colours for these signals on the TTL-232R-
5V-WE and TTL-232R-3V3-WE cables.
VCC
1
GND
CTS#
VCC
TXD
1
BLACK
2
3
4
5
6
2
BROWN
RED
3
CABLE 1.8m
4
5
6
ORANGE
RXD
RTS#
YELLOW
GREEN
Figure 6.1 TTL-232R-5V-WE and TTL-232R-3V3-WE Connections
Figure 6.2 TTL-232R-5V-WE and TTL-232R-3V3-WE Mechanical Details (dimensions in mm)
6.2 TTL-232R-5V-WE and TTL-232R-3V3-WE Cable Signal Descriptions
Colour
Black
Name
GND
CTS#
VCC
Type
GND
Description
Device ground supply pin.
Brown
Red
Input
Clear to Send Control input / Handshake signal.
+5V output
Output
Output
Input
Orange
Yellow
Green
TXD
Transmit Asynchronous Data output.
Receive Asynchronous Data input.
Request To Send Control Output / Handshake signal.
RXD
RTS#
Output
Table 6.1 TTL-232R-5V-WE and TTL-232R-3V3-WE Cable Signal Descriptions
6.3 TTL-232R-5V-WE and TTL-232R-3V3-WE Electrical Parameters
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