Copyright © Future Technology Devices International Limited

16

Document Reference No.: FT_000054

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.

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

Name

Type

Description

Black

GND

GND

Device ground supply pin.

Brown

CTS#

Input

Clear to Send Control input / Handshake signal.

Red

VCC

Output

+5V output

Orange

TXD

Output

Transmit Asynchronous Data output.

Yellow

RXD

Input

Receive Asynchronous Data input.

Green

RTS#

Output

Request To Send Control Output / Handshake signal.

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

GND

CTS#

VCC

TXD

RXD

RTS#

1

2

3

4

5

6

CABLE 1.8m

VCC

1

2

3

4

5

6

BLACK

BROWN

RED

ORANGE

YELLOW

GREEN