Document Reference No.: FT_000054
TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.02
Clearance No.: FTDI# 53
4 TTL-232R-5V and TTL-232R-3V3 Cables
The TTL-232R-5V and TTL-232R-3V3 cables are both terminated by a 6 way, 0.1”, Single-In-Line (SIL)
connector. The difference between the two cables is that the TTL-232R-5V operates at +5V levels (signals
and power supply) and the TTL-232R-3V3 operates at +3.3V levels (signals only, VCC= +5V).
4.1 TTL-232R-5V, TTL-232R-3V3 Connector Pin Out and Mechanical details
6 pin header
0.1in pitch
VCC
1
GND
1
BLACK
2
CTS#
2
BROWN
RED
3
4
5
6
VCC
TXD
RXD
RTS#
3
CABLE 1.8m
4
5
6
ORANGE
YELLOW
GREEN
Figure 4.1 TTL-232R-5V and TTL-232R-3V3, 6 Way Header Pin Out
The mechanical details of the 6 way connector are shown in the following diagram
Dimensions (mm)
2.54 +/- 0.05
12.70 +/- 0.2
15.24 +/- 0.2
A
A
B
C
D
E
B
C
Pin 1
E
14.0 +/- 0.2
D
2.54 +/- 0.05
Figure 4.2 TTL-232R-5V TTL-232R-3V3, 6 Way Header Mechanical Details
4.2 TTL-232R-5V and TTL-232R-3V3 Cable Signal Descriptions
Header Pin
Name
Type
Colour
Description
Number
1
2
3
GND
CTS#
VCC
GND
Input
Black
Brown
Red
Device ground supply pin.
Clear to Send Control input / Handshake signal.
+5V output,
Output
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