Datasheet

Copyright © 2010 Future Technology Devices International Limited 10
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
GND
CTS#
VCC
TXD
RXD
RTS#
1
2
3
4
5
6
CABLE 1.8m
VCC
1
2
3
4
5
6
6 pin header
0.1in pitch
BLACK
BROWN
RED
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
A
B
C
D
Pin 1
E
Dimensions (mm)
2.54 +/- 0.05A
12.70 +/- 0.2B
C
14.0 +/- 0.2D
2.54 +/- 0.05E
15.24 +/- 0.2
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
Number
Name
Type
Colour
Description
1
GND
GND
Black
Device ground supply pin.
2
CTS#
Input
Brown
Clear to Send Control input / Handshake signal.
3
VCC
Output
Red
+5V output,