TTL-232R

FTDI, Future Technology Devices International Ltd

Datasheet

Future Technology Devices International Limited (FTDI)

Unit 1, 2 Seaward Place, Glasgow G41 1HH, United Kingdom

Tel.: +44 (0) 141 429 2777 Fax: + 44 (0) 141 429 2758

E-Mail (Support): support1@ftdichip.com Web: http://www.ftdichip.com

Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced

in any material or electronic form without the prior written consent of the copyright holder. This product and its documen tation are

supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology

Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your

statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in

which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary

information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by

the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41

1HH, United Kingdom. Scotland Registered Number: SC136640

Future Technology Devices International Ltd

TTL-232R

TTL to USB Serial Converter Range of

Cables

Datasheet

Document Reference No.: FT_000054

Version 2.03

Issue Date: 2016-05-23

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

1 Description

The TTL-232R cables are a family of USB to TTL serial UART converter cables incorporating FTDI’s

FT232RQ USB to Serial UART interface IC device which handles all the USB signalling and protocols. The

cables provide a fast, simple way to connect devices with a TTL level serial interface to USB.

Each TTL-232R cable contains a small internal electronic circuit board, utilising the FT232R, which is

encapsulated into the USB connector end of the cable. The FT232R datasheet, DS_FT232R, is available at

http://www.ftdichip.com. The other end of the cable comes with a selection of different connectors

supporting various applications – see Table 1.1

Cables are FCC, CE, RoHS compliant and are available at TTL levels of +5V and +3.3V.

Cables are available with either a 6-way SIL,0.1” pitch connector, a 3.5mm Audio Jack, an 8 way, keyed

2mm pitch connector (intended for use with VMUSIC2 or VDRIVE2) or bare, tinned wire ended

connections (see Table 1.1)

The USB side of the cable is USB powered and USB 2.0 full speed compatible. Each cable is 1.8m long

and supports a data transfer rate up to 3 Mbaud. Each cable supports the FTDIChip-ID™, with a unique

USB serial number programmed into the FT232R. This feature can be used to create a security or

password protected file transfer access using the cable. Further information and examples on this feature

are available at http://www.ftdichip.com under FTDIChip-ID Projects.

The TTL-232R cables require USB drivers, available free from http://www.ftdichip.com, which are

used to make the FT232R in the cable appear as a virtual COM port (VCP). This then allows the user to

communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another

FTDI USB driver, the D2XX driver, can also be used with application software to directly access the

FT232R on the cable though a DLL. This is illustrated in the Figure 1.1

VCP

TTY

USB

TTL-232R

Virtual COM Port

Software application access to USB via D2XX

USB

TTY

D2XX

DLL

Wire Ended

3mm Audio Jack

6 way, 0.1" Single In Line connector

8 way, Keyed,2mm, Single In Line

connector

Various Connector

Options

Wire Ended

3mm Audio Jack

6 way, 0.1" Single In Line connector

Various Connector

Options

8 way, Keyed,2mm, Single In Line

connector

Figure 1.1 Using the TTL-232R Cable

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

1.1 Available Cables and Part Numbers

The following Table 1.1 gives details of the available TTL-232R cables.

Part Number

Description

End Connector*

Cable details

TTL-232R-5V**

USB to UART cable with +5V TTL level

UART signals.

6 pin SIL, 0.1” pitch

6 core, UL2464

24 AWG,

diam=5mm

TTL-232R-3V3

USB to UART cable with +3.3V TTL level

UART signals.

6 pin SIL, 0.1” pitch

6 core, UL2464

24 AWG,

diam=5mm

TTL-232R-5V-

WE**

USB to UART cable with +5V TTL level

UART signals.

Wire Ended (no

connector)

6 core, UL2464

24 AWG,

diam=5mm

TTL-232R-3V3-

USB to UART cable with +3.3V TTL level

UART signals.

Wire Ended (no

connector)

6 core, UL2464

24 AWG,

diam=5mm

TTL-232R-5V-

AJ**

USB to UART cable with +5V TTL level

UART signals.

3.5mm Audio Jack

2 core and spiral,

24 AWG

diam=5mm

TTL-232R-3V3-

USB to UART cable with +3.3V TTL level

UART signals.

3.5mm Audio Jack

2 core and spiral,

24 AWG

diam=5mm

TTL-232R-3V3-

2mm

USB to UART cable with +3.3V TTL level

UART signals.

8 way, keyed, 2mm

connector for use

with FTDI VDRIVE2

or VMUSIC2 modules

7 core, UL2464

26 AWG,

diam=5mm

Table 1.1 TTL-232R Cables Descriptions and Part Numbers

* FTDI supports customised end connector designs. For more information, please contact FTDI Sales Team

(sales1@ftdichip.com)

** These cables are identical to cables which do not have the “5V” in the part number. The 5V was added to the part

number for clarity.

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

1.2 Certifications

FTDI TTL-232R range of cables are fully RoHs compliant as well as CE and FCC certified (with the

exception of the TTL-232R-XX-WE cables which have not yet completed FCC and CE testing).

1.3 USB Compliant

The TTL-232R cables are fully compliant with the USB 2.0 specification.

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

Table of Contents

1 Description ..................................................................................... 1

1.1 Available Cables and Part Numbers ............................................................... 2

1.2 Certifications ................................................................................................. 3

1.3 USB Compliant .............................................................................................. 3

The TTL-232R cables are fully compliant with the USB 2.0 specification. ................ 3

2 Typical Applications ........................................................................ 6

2.1 Driver Support .............................................................................................. 6

2.2 Features ........................................................................................................ 7

3 Features of FT232R applicable toTTL-232R Cables ......................... 8

4 TTL-232R-5V and TTL-232R-3V3 Cables ....................................... 10

4.1 TTL-232R-5V, TTL-232R-3V3 Connector Pin Out and Mechanical details .... 10

4.2 TTL-232R-5V and TTL-232R-3V3 Cable Signal Descriptions ........................ 10

4.3 TTL-232R-5V and TTL-232R-3V3 Electrical Parameters ............................... 11

4.3.1 TTL-232R-5V Electrical Parameters ............................................................ 11

4.3.2 TTL-232R-3V3 Electrical Parameters .......................................................... 11

5 TTL-232R-5V-AJ and TTL-232R-3V3-AJ ........................................ 13

5.1 TTL-232R-5V-AJ, TTL-232R-3V3-AJ Connector Pin Out and Mechanical

details ................................................................................................................... 13

5.2 TTL-232R-5V-AJ and TTL-232R-3V3-AJ Cable Signal Descriptions .............. 14

5.3 TTL-232R-5V-AJ and TTL-232R-3V3-AJ Electrical Parameters ..................... 14

5.3.1 TTL-232R-5V-AJ Electrical Parameters ........................................................ 14

5.3.2 TTL-232R-3V3-AJ Electrical Parameters ...................................................... 15

6 TTL-232R-5V-WE and TTL-232R-3V3-WE Cables .......................... 16

6.1 TTL-232R-5V-WE, TTL-232R-3V3-WE Connections and Mechanical Details 16

6.2 TTL-232R-5V-WE and TTL-232R-3V3-WE Cable Signal Descriptions ............ 16

6.3 TTL-232R-5V-WE and TTL-232R-3V3-WE Electrical Parameters .................. 16

6.3.1 TTL-232R-5V-WE Electrical Parameters ...................................................... 17

6.3.2 TTL-232R-3V3-WE Electrical Parameters .................................................... 17

7 TTL-232R-3V3-2mm Cables .......................................................... 18

7.1 TTL-232R-3V3-2mm Connector Pin Out and Mechanical details .................. 18

7.2 TTL-232R-3V3-2mm Cable Signal Descriptions ........................................... 19

7.3 TTL-232R-3V3-2mm Electrical Parameters .................................................. 19

8 Cable PCB Circuit Schematic ......................................................... 20

9 Contact Information ..................................................................... 21

Appendix A - Cable EEPROM Configuration ......................................... 22

Appendix B - List of Figures and Tables.............................................. 24

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TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

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Appendix C - Revision History ............................................................ 25

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

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2 Typical Applications

 USB to Serial TTL Level Converter

 Upgrading Legacy Peripherals to USB

 Interface Microcontroller UART or I/O to USB

 Interface FPGA / PLD to USB

 Interface to FTDI VDRIVE2 or VMUSIC2

modules.

 Replace MAX232 type level shifters allowing for

direct connection of products to PC via USB

 USB Instrumentation PC interface

 USB Industrial Control

 USB Software / Hardware Encryption Dongles

2.1 Driver Support

Royalty free VIRTUAL COM PORT

(VCP) DRIVERS for...

 Windows 10 32,64-bit

 Windows 8/8.1 32,64-bit

 Windows 7 32,64-bit

 Windows Vista and Vista 64-bit

 Windows XP and XP 64-bit

 Windows 98, 98SE, ME, 2000, Server 2003, XP,

Server 2008 and server 2012 R2

 Windows XP Embedded

 Windows CE 4.2, 5.0 and 6.0

 Mac OS 8/9, OS-X

 Linux 2.4 and greater

Royalty free D2XX Direct Drivers

(USB Drivers + DLL S/W Interface)

 Windows 10 32,64-bit

 Windows 8/8.1 32,64-bit

 Windows 7 32,64-bit

 Windows Vista and Vista 64-bit

 Windows XP and XP 64-bit

 Windows 98, 98SE, ME, 2000, Server 2003, XP,

Server 2008 and server 2012 R2

 Windows XP Embedded

 Windows CE 4.2, 5.0 and 6.0

 Linux 2.4 and greater

 Android (J2xx)

The drivers listed above are all available to download for free from www.ftdichip.com. Various 3rd

Party Drivers are also available for various other operating systems - see www.ftdichip.com for details.

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

2.2 Features

 TTL-232R Converter Cable provides a USB to

TTL Serial interface with various end

connectors.

 On board FT232RQ provides single chip USB to

asynchronous serial data transfer interface.

 Entire USB protocol handled by the electronics

in the cable USB.

 Connect directly to a microcontroller UART or

I/O pins.

 UART interface support for 7 or 8 data bits, 1

or 2 stop bits and odd / even / mark / space /

no parity.

 Fully assisted hardware (RTS#/CTS#) or X-On

/ X-Off software handshaking.

 Data transfer rates from 300 baud to 3 Mbaud

at TTL levels.

 Internal EEPROM with user writeable area.

 5V CMOS drive outputs and 5V safe TTL inputs

makes the TTL-232R easy to interface to 5V

MCU’s.

 FTDI’s royalty-free VCP allow for

communication as a standard emulated COM

port and D2XX ‘direct’ drivers provide DLL

application programming interface.

 Support for FT232R FTDIChip-ID™ feature for

improved security.

 +5V or +3.3V output allows external logic to be

powered from the USB port.

 6 way outputs provide Tx, Rx, RTS#, CTS#,

VCC and GND (except Audio Jack which

provides only TX,RX and GND).

 8 way, keyed connector to support FTDI

VDRIVE2 and VMUSIC2.

 3 way Audio Jack connector provides Tx, Rx

and GND.

 Low USB bandwidth consumption.

 UHCI / OHCI / EHCI host controller compatible.

 USB 2.0 Full Speed compatible.

 -40°C to +85°C operating temperature range.

 Cable length is 1.80m (6 feet).

 FCC and CE compliant.

 Custom versions also available (subject to

MOQ).

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

3 Features of FT232R applicable toTTL-232R Cables

The TTL-232R cables use FTDI’s FT232RQ USB to serial IC device. This section summarises the key

features of the FT232RQ which apply to the TTL-232R USB to serial TTL converter cables. For further

details, and a full features and enhancements description consult the FT232R datasheet, this is available

from www.ftdichip.com.

Internal EEPROM. The internal EEPROM in each cable is used to store USB Vendor ID (VID), Product ID

(PID), device serial number, product description string and various other USB configuration descriptors.

Each cable is supplied with the internal EEPROM pre-programmed as described in Contact Information

Head Office – Glasgow, UK

Future Technology Devices International Limited

Unit 1, 2 Seaward Place, Centurion Business Park

Glasgow G41 1HH

United Kingdom

Tel: +44 (0) 141 429 2777

Fax: +44 (0) 141 429 2758

E-mail (Sales)

sales1@ftdichip.com

E-mail (Support)

support1@ftdichip.com

E-mail (General Enquiries)

admin1@ftdichip.com

Branch Office – Taipei, Taiwan

Future Technology Devices International Limited

(Taiwan)

2F, No. 516, Sec. 1, NeiHu Road

Taipei 114

Taiwan , R.O.C.

Tel: +886 (0) 2 8797 1330

Fax: +886 (0) 2 8751 9737

E-mail (Sales)

tw.sales1@ftdichip.com

E-mail (Support)

tw.support1@ftdichip.com

E-mail (General Enquiries)

tw.admin1@ftdichip.com

Branch Office – Tigard, Oregon, USA

Future Technology Devices International Limited

(USA)

7130 SW Fir Loop

Tigard, OR 97223

USA

Tel: +1 (503) 547 0988

Fax: +1 (503) 547 0987

E-Mail (Sales)

us.sales@ftdichip.com

E-Mail (Support)

us.support@ftdichip.com

E-Mail (General Enquiries)

us.admin@ftdichip.com

Branch Office – Shanghai, China

Future Technology Devices International Limited

(China)

Room 1103, No.666 West Huaihai Road,

Shanghai, 200052

China

Tel: +86 21 62351596

Fax: +86 21 62351595

E-mail (Sales)

cn.sales@ftdichip.com

E-mail (Support)

cn.support@ftdichip.com

E-mail (General Enquiries)

cn.admin@ftdichip.com

Web Site

http://ftdichip.com

Distributor and Sales Representatives

Please visit the Sales Network page of the FTDI Web site for the contact details of our distributor(s) and sales

representative(s) in your country.

System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology

Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level

performance requirements. All application-related information in this document (including application descriptions, suggested

FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this

information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications

assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the

user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from

such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is

implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product

described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent

of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,

Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

Appendix A - Cable EEPROM Configuration. A user area of the internal EEPROM is available to system

designers to allow storing additional data. The internal EEPROM descriptors can be programmed in circuit,

over USB without any additional voltage requirement. It can be programmed using the FTDI utility

software called FT_PROG, which can be downloaded from FTDI Utilities on the FTDI website

(www.ftdichip.com).

Lower Operating and Suspend Current. The FT232R has a low 15mA operating supply current and a

very low USB suspend current of approximately 70μA. (Note that during suspend mode, the current

drawn by application should not exceed 2.5mA to remain USB compliant)

Low USB Bandwidth Consumption. The USB interface of the FT232R, and therefore the TTL-232R

cables has been designed to use as little as possible of the total USB bandwidth available from the USB

host controller.

High Output Drive Option. The UART interface I/O pins on the TTL-232R cables (RXD, TXD, RTS#, and

CTS#) can be configured to use the FT232R’s high output drive option. This option allows the FT232R

I/O pins to drive up to three times the standard signal drive level. This allows multiple devices to be

driven, or devices that require a greater signal drive strength to be interfaced to the cables. This option is

enabled in the internal EEPROM.

UART Pin Signal Inversion. The sense of each of the eight UART signals can be individually inverted by

configuring options in the internal EEPROM. For example CTS# (active low) can be changed to CTS

(active high), or TXD can be changed to TXD#.

FTDIChip-ID™. The FT232R includes the new FTDIChip-ID™ security dongle feature. This FTDIChip-ID™

feature allows a unique number to be burnt into each cable during manufacture. This number cannot be

reprogrammed. This number is only readable over USB can be used to form the basis of a security dongle

which can be used to protect any customer application software being copied. This allows the possibility

of using the TTL-232R cables as a dongle for software licensing. Further to this, a renewable license

scheme can be implemented based on the FTDIChip-ID™ number when encrypted with other information.

This encrypted number can be stored in the user area of the FT232R internal EEPROM, and can be

decrypted, then compared with the protected FTDIChip-ID™ to verify that a license is valid. Web based

applications can be used to maintain product licensing this way. An application note, AN232R-02,

available from FTDI website (www.ftdichip.com) describes this feature.

Improved EMI Performance. The TTL-232R cables are FCC and CE certified.

Extended Operating Temperature Range - The TTL-232R cables are capable of operating over an

extended temperature range of -40º to +85º C thus allowing them to be used in automotive or industrial

applications.

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

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#

CABLE 1.8m

VCC

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

Pin 1

Dimensions (mm)

2.54 +/- 0.05A

12.70 +/- 0.2B

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

GND

Black

Device ground supply pin.

CTS#

Input

Brown

Clear to Send Control input / Handshake signal.

VCC

Output

Red

+5V output,

Document Reference No.: FT_000054

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Header Pin

Number

Name

Type

Colour

Description

TXD

Output

Orange

Transmit Asynchronous Data output.

RXD

Input

Yellow

Receive Asynchronous Data input.

RTS#

Output

Green

Request To Send Control Output / Handshake signal.

Table 4.1 TTL-232R-5V and TTL-232R-3V3 Cable Signal Descriptions

4.3 TTL-232R-5V and TTL-232R-3V3 Electrical Parameters

4.3.1 TTL-232R-5V Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

VCC

Output Power Voltage

4.25

5.0

5.25

Dependant on the USB

port that the TTL-232R-

5V is connected to

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 4.2 TTL-232R-5V I/O Operating Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

3.2

4.1

4.9

I source = 2mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 2mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 4.3 TTL-232R-5V I/O Pin Characteristics

4.3.2 TTL-232R-3V3 Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

VCC

Output Power Voltage

4.25

5.0

5.25

Dependant on the USB

port that the TTL-232R-

3V3 is connected to

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 4.4 TTL-232R-3V3 I/O Operating Parameters

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Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

2.2

2.8

3.2

I source = 3mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 8mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 4.5 TTL-232R-3V3 I/O Pin Characteristics

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5 TTL-232R-5V-AJ and TTL-232R-3V3-AJ

The TTL-232R-5V-AJ and TTL-232R-3V3-AJ cables are both terminated by a standard 3.5mm Audio Jack

(AJ) connector. The difference between the two cables is that the TTL-232R-5V-AJ operates at +5V levels

(signals and power supply) and the TTL-232R-3V3-AJ operates at +3.3V levels (signals and power

supply). On these cables the VCC power is not transferred.

5.1 TTL-232R-5V-AJ, TTL-232R-3V3-AJ Connector Pin Out and Mechanical

details

Figure 5.1 TTL-232R-5V and TTL-232R-3V3, 6 Way Header Pin Out

The mechanical details of the Audio Jack connector are shown in the following Figure 5.2.

Figure 5.2 TTL-232R-5V-AJ and TTL-232R-3V3-AJ Audio Jack Mechanical Details

GND

TXD

RXD

CABLE 1.8m

3.5mm Audio Jack

BLACK

ORANGE

YELLOW

14.0 +/- 0.2

3.0+/- 0.1 2.6+/- 0.1

3.2+/- 0.1 3.5+/- 0.1 6.0+/- 0.1

Dimensions in mm

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

5.2 TTL-232R-5V-AJ and TTL-232R-3V3-AJ Cable Signal Descriptions

Header Pin

Number

Name

Type

Colour

Description

TIP

TXD

GND

Black

Transmit Asynchronous Data output.

RING

RXD

Input

Brown

Receive Asynchronous Data input.

SLEEVE

GND

Output

Red

GND

Table 5.1 TTL-232R-5V-AJ and TTL-232R-3V3-AJ Cable Signal Descriptions

5.3 TTL-232R-5V-AJ and TTL-232R-3V3-AJ Electrical Parameters

5.3.1 TTL-232R-5V-AJ Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 5.2 TTL-232R-5V-AJ I/O Operating Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

3.2

4.1

4.9

I source = 6mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 6mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 5.3 TTL-232R-5V-AJ I/O Pin Characteristics

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

5.3.2 TTL-232R-3V3-AJ Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 5.4 TTL-232R-3V3-AJ I/O Operating Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

2.2

2.8

3.2

I source = 3mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 8mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 5.5 TTL-232R-3V3-AJ I/O Pin Characteristics

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

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

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#

CABLE 1.8m

VCC

BLACK

BROWN

RED

ORANGE

YELLOW

GREEN

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

6.3.1 TTL-232R-5V-WE Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

VCC

Output Power Voltage

4.25

5.0

5.25

Dependant on the USB port

that the TTL-232R-5V-WE is

connected to

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 6.2 TTL-232R-5V-WE I/O Operating Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

3.2

4.1

4.9

I source = 6mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 6mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 6.3 TTL-232R-5V-WE I/O Pin Characteristics

6.3.2 TTL-232R-3V3-WE Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

VCC

Output Power Voltage

4.25

5.0

5.25

Dependant on the USB port

that the TTL-232R-3V3-WE

is connected to

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 6.4 TTL-232R-3V3-WE I/O Operating Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

2.2

2.8

3.2

I source = 3mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 8mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 6.5 TTL-232R-3V3-WE I/O Pin Characteristics

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

7 TTL-232R-3V3-2mm Cables

The TTL-232R-3V3-2mm cable is terminated by a 8 way, 2mm pitch, Single-In-Line (SIL) keyed

connector. The TTL-232R-3V3-2mm operates at +3.3V levels (signals and power supply). These cables

are primarily intended for interfacing the FTDI VDRIVE2 and VMUSIC2 modules.

Note that when connected to VDRIVE2 or VMUSIC2 module, the TTL-232R-3V3-2mm cable 8-way

connector pin 1 connects to pin 8 of the module, and pin 8 of the cable connects to pin 1 of the cable.

7.1 TTL-232R-3V3-2mm Connector Pin Out and Mechanical details

GND

CTS#

VCC

TXD

RXD

RTS#

5,1

CABLE 1.8m

VCC

8 pin header

2mm pitch

BLACK

BROWN

RED

ORANGE

YELLOW

GREEN

KEY

BLUE

Figure 7.1 TTL-232R-3V3-2mm, 8 Way Header Pin Out

The mechanical details of the 2mm pitch 8 way, keyed, connector are shown in the following diagram

Pin 1

Dimensions (mm)

2.00 +/- 0.005A

14.00 +/- 0.2B

7.10 +/- 0.25D

2.00 +/- 0.005E

16.40 +/- 0.2

Figure 7.2 TTL-232R-3V3-2mm, 2mm pitch, Keyed, 8 way Header Mechanical Details

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

7.2 TTL-232R-3V3-2mm Cable Signal Descriptions

Header Pin

Number

Name

Type

Colour

Description

RI#

Output

Blue

Ring Indicator Control Input. When remote wake up is

enabled taking RI# low (20ms active low pulse) can be

used to resume the VMUSIC2 or VDRIVE2 host controller

from suspend. Connected to TXD.

KEY

This connection is keyed to connect to the VRDIVE2 or the

VMUSIC2 modules

RTS#

Output

Green

Request To Send Control Output / Handshake signal.

RXD

Input

Yellow

Receive Asynchronous Data input.

TXD

Output

Orange

Transmit Asynchronous Data output.

VCC

Output

Red

+5V output,

CTS#

Input

Brown

Clear to Send Control input / Handshake signal.

GND

Black

Device ground supply pin.

Table 7.1 TTL-232R-3V3-2mm Cable Signal Descriptions

7.3 TTL-232R-3V3-2mm Electrical Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

VCC

Output Power Voltage

4.25

5.0

5.25

Dependant on the USB port

that the TTL-232R-3V3-2mm

is connected to

Output Power Current

Must be less that 2.5mA

during suspend.

Operating Temperature

Range

-40

+85

Table 7.2 TTL-232R-3V3-2mm I/O Operating Parameters

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

2.2

2.8

3.2

I source = 3mA

Vol

Output Voltage Low

0.3

0.4

0.6

I sink = 8mA

Vin

Input Switching Threshold

1.0

1.2

1.5

VHys

Input Switching Hysteresis

Table 7.3 TTL-232R-3V3-2mm I/O Pin Characteristics

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

8 Cable PCB Circuit Schematic

The circuit schematic for the small internal electronic circuit board, utilising the FTDI FT232R, which is

encapsulated into the USB connector end of the cable, is shown in Figure 8.1.

Customised versions of these cables are also available. Users interested in customised versions of these

cables should contact FTDI sales (sales1@ftdichip.com).

FT232RQ

4 17 20 24 26

19 16

270R

TXD

RTS#

RXD

CTS#

100nF

VCC-3V3

VCCIO

VCC

100nF

4.7uF +

10nF

GND

47pF x 2

USB-DP

USB-DM

USB “A” PLUG

INTERNAL IO VOLTAGE SELECTIONVCC

VCC-3V3

VCC-IO

PULL UP RESISTORS

NOT FITTED

CTS#

TXD

RXD

RTS#

VCC-IO

Figure 8.1 Circuit Schematic of PCB Used in the TTL to USB Serial Converter Cables

Document Reference No.: FT_000054

TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.03

Clearance No.: FTDI# 53

9 Contact Information