Future Technology Devices International Ltd
TTL-234X
TTL234X Series Range of Cables
Datasheet
Document Reference No.: FT_001394
Version 1.0
Issue Date: 2017-02-22
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 documentation 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 produ ct. 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 preliminar y
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
Copyright © Future Technology Devices International Limited
TTL234X SERIES RANGE OF CABLES
Datasheet
Version 1.0
Document Reference No.: FT_001394 Clearance No.: FTDI#520
1
Description
The TTL-234X cables are a family of USB to TTL serial UART converter cables incorporating FTDI’s
FT234XD USB to basic 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-234X cable contains a small internal electronic circuit board, utilising the FT234XD, which is
encapsulated into the USB connector end of the cable. The FT234XD datasheet, DS_FT234XD, 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.
The TTL-234X cables require USB drivers, available free from http://www.ftdichip.com, which are used to
make the FT234XD 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
FT234XD on the cable though a DLL. This is illustrated in the Figure 1.1
Figure 1.1 Using the TTL-234X Cable
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Datasheet
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
1.1 Available Cables and Part Numbers
The following Table 1.1 gives details of the available TTL-234X cables.
Part Number
TTL-234X-5V
TTL-234X-3V3
Description
USB to UART cable with +5V TTL level
UART signals.
USB to UART cable with +3.3V TTL level
UART signals.
End Connector*
Cable details
6 core, UL2464
6 pin SIL, 0.1” pitch
24 AWG,
diam=5mm
6 core, UL2464
6 pin SIL, 0.1” pitch
24 AWG,
diam=5mm
TTL-234X-5V-
USB to UART cable with +5V TTL level
Wire Ended (no
WE
UART signals.
connector)
TTL-234X-3V3-
USB to UART cable with +3.3V TTL level
Wire Ended (no
WE
UART signals.
connector)
6 core, UL2464
24 AWG,
diam=5mm
6 core, UL2464
24 AWG,
diam=5mm
2 core and spiral,
TTL-234X-5V-AJ
USB to UART cable with +5V TTL level
UART signals.
3.5mm Audio Jack
24 AWG
diam=5mm
2 core and spiral,
TTL-234X-3V3-
USB to UART cable with +3.3V TTL level
AJ
UART signals.
3.5mm Audio Jack
24 AWG
diam=5mm
8 way, keyed, 2mm
TTL-234X-3V3-
USB to UART cable with +3.3V TTL level
connector for use
2mm
UART signals.
with FTDI VDRIVE2
or VMUSIC2 modules
7 core, UL2464
26 AWG,
diam=5mm
Table 1.1 TTL-234X Cables Descriptions and Part Numbers
*
FTDI supports customised end connector designs. For more information, please contact FTDI Sales Team
(sales1@ftdichip.com)
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Datasheet
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
1.2 Certifications
FTDI TTL-234X range of cables is fully RoHs compliant as well as CE and FCC certified
1.3 USB Compliant
The TTL-234X cables is fully compatible with the USB 2.0 specification.
The FT234XD chipset has used in this design has full USB-IF compliance.
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Datasheet
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
Table of Contents
1
2
Description ...................................................................... 1
1.1
Available Cables and Part Numbers........................................... 2
1.2
Certifications ............................................................................ 3
1.3
USB Compliant .......................................................................... 3
Typical Applications ........................................................ 6
2.1
Driver Support .......................................................................... 6
2.2
Features .................................................................................... 7
3
Features of the FT234XD applicable to TTL-234X Cables . 8
4
TTL-234X-5V & TTL-234X-3V3 Cables ........................... 10
4.1 TTL-234X-5V, TTL-234X-3V3 Connector Pin Out and Mechanical
details ............................................................................................. 10
5
4.2
TTL-234X-5V & TTL-234X-3V3 Cable Signal Descriptions ........ 11
4.3
TTL-234X-5V & TTL-234X-3V3 Electrical Parameters .............. 11
4.3.1
TTL-234X-5V Electrical Parameters ............................................................ 11
4.3.2
TTL-234X-3V3 Electrical Parameters .......................................................... 12
TTL-234X-5V-AJ & TTL-234X-3V3-AJ ............................ 13
5.1 TTL-234X-5V-AJ, TTL-234X-3V3-AJ Connector Pin Out and
Mechanical details ........................................................................... 13
6
5.2
TTL-234X-5V-AJ & TTL-234X-3V3-AJ Cable Signal Description 14
5.3
TTL-234X-5V-AJ & TTL-234X-3V3-AJ Electrical Parameters .... 14
5.3.1
TTL-234X-5V-AJ Electrical Parameters ........................................................ 14
5.3.2
TTL-234X-3V3-AJ Electrical Parameters ...................................................... 15
TTL-234X-5V-WE and TTL-234X-3V3-WE Cables ........... 16
6.1 TTL-234X-5V-WE, TTL-234X-3V3-WE Connections and
Mechanical Details........................................................................... 16
6.2 TTL-234X-5V-WE and TTL-234X-3V3-WE Cable Signal
Descriptions .................................................................................... 16
6.3
7
TTL-234X-5V-WE & TTL-234X-3V3-WE Electrical Parameters . 17
6.3.1
TTL-234X-5V-WE Electrical Parameters ...................................................... 17
6.3.2
TTL-234X-3V3-WE Electrical Parameters .................................................... 17
TTL-234X-3V3-2mm Cable ............................................ 19
7.1
TTL-234X-3V3-2mm Connector Pin Out and Mechanical details
19
7.2
TTL-234X-3V3-2mm Cable Signal Descriptions ....................... 20
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7.3
TTL-234X-3V3-2mm Electrical Parameters ............................. 20
8
Cable PCB Circuit Schematic .......................................... 21
9
Contact Information ...................................................... 22
Appendix A - Cable MTP MEMORY Configuration ................ 23
Appendix B - List of Figures and Tables ............................. 25
List of Figures ................................................................................. 25
List of Tables ................................................................................... 25
Appendix C - Revision History ............................................ 26
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2
Typical Applications
USB to Serial TTL Level Converter
USB Instrumentation PC interface
Upgrading Legacy Peripherals to USB
USB Industrial Control
Interface Microcontroller UART or I/O to USB
USB Software / Hardware Encryption Dongles
Interface FPGA / PLD to USB
“Maker” projects test cable
Firmware download and debug cable
2.1 Driver Support
Royalty free VIRTUAL COM PORT
Royalty free D2XX Direct Drivers
(VCP) DRIVERS for...
(USB Drivers + DLL S/W Interface)
Windows 10 32,64-bit
Windows 10 32,64-bit
Windows 8/8.1 32,64-bit
Windows 8/8.1 32,64-bit
Windows 7 32,64-bit
Windows 7 32,64-bit
Server 2003, Server 2008 and server 2012 R2
Windows CE 4.2, 5.0 and 6.0
Windows Server 2003, Server 2008 and server
2012 R2
Mac OS OS-X
Windows CE 4.2, 5.0 and 6.0
Linux 2.4 and greater
MAC OS-X
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.
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
2.2 Features
TTL-234X Converter Cable provides a USB to
TTL Serial interface with various end
connectors.
+5V output allows external logic to be powered
from the USB port.
On board FT234XD provides single chip USB to
asynchronous serial data transfer interface.
6 way outputs provide Tx, Rx, RTS#, CTS#,
VCC and GND (except Audio Jack which provide
only TX, RX and GND).
Entire USB protocol handled by the electronics
in the cable USB.
8 way, keyed connector to support FTDI
VDRIVE2 and VMUSIC2.
Connect directly to a microcontroller UART or
I/O pins.
3 way Audio Jack connector provides Tx, Rx
and GND.
UART interface support for 7 or 8 data bits, 1
or 2 stop bits and odd / even / mark / space /
no parity.
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).
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 MTP MEMORY with user writeable area.
5V CMOS drive outputs and 5V safe TTL inputs
makes the TTL-234X easy to interface to 5V
MCU’s.
FTDI’s royalty-free VCP allows for
communication as a standard emulated COM
port and D2XX ‘direct’ drivers provide DLL
application programming interface.
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3
Features of the FT234XD applicable to TTL-234X Cables
The TTL-234X cables uses FTDI’s FT234XD USB to serial IC device. This section summarises the key
features of the FT234XD which apply to the TTL-234X USB to serial TTL converter cables. For further
details, and a full features and enhancements description consult the FT234XD datasheet, this is available
from www.ftdichip.com.
Internal MTP MEMORY. The internal MTP MEMORY 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 MTP MEMORY pre-programmed as described in
Contact Information
Head Office – Glasgow, UK
Branch Office – Tigard, Oregon, USA
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
Future Technology Devices International Limited (USA)
7130 SW Fir Loop
Tigard, OR 97223-8160
USA
Tel: +1 (503) 547 0988
Fax: +1 (503) 547 0987
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
sales1@ftdichip.com
support1@ftdichip.com
admin1@ftdichip.com
us.sales@ftdichip.com
us.support@ftdichip.com
us.admin@ftdichip.com
Branch Office – Taipei, Taiwan
Branch Office – Shanghai, China
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 8791 3576
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)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
tw.sales1@ftdichip.com
tw.support1@ftdichip.com
tw.admin1@ftdichip.com
cn.sales@ftdichip.com
cn.support@ftdichip.com
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
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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 FTD I. 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 a nd 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, Un it 1, 2
Seaward Place, Centurion Business Park, Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640
Appendix A - Cable MTP MEMORY Configuration.
A user area of the internal
MTP MEMORY is available to system designers to allow storing additional data. The internal MTP MEMORY
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 FT234XD has a low 8mA operating supply current and a
very low USB suspend current of approximately 125μA. (Note that during suspend mode, the current
drawn by an application should not exceed 2.5mA to remain USB compliant)
UART Pin Signal Inversion. The sense of each of the four UART signals can be individually inverted by
configuring options in the internal MTP MEMORY. For example CTS# (active low) can be changed to CTS
(active high), or TXD can be changed to TXD#.
Improved EMI Performance. The TTL-234X cables is FCC and CE certified.
Extended Operating Temperature Range - The TTL-234X cables are capable of operating over an
extended temperature range of -40º C to +85º C thus allowing them to be used in automotive or
industrial applications.
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4
TTL-234X-5V & TTL-234X-3V3 Cables
The TTL-234X-5V and TTL-234X-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-234X-5V operates at +5V levels (signals
and power supply) and the TTL-234X-3V3 operates at +3.3V levels (signals only, VCC= +5V).
4.1 TTL-234X-5V,
TTL-234X-3V3
Mechanical details
Connector
Pin
Out
and
6 pin header
0.1in pitch
VCC
GND
1
1
CTS#
2
2
VCC
3
TXD
BLACK
BROWN
3
RED
4
4
ORANGE
RXD
5
5
RTS#
6
6
CABLE 1.8m
YELLOW
GREEN
Figure 4.1 TTL-234X-5V and TTL-234X-3V3, 6 Way Header Pin Out
The mechanical details of the 6 way connector are shown in the following diagram
Dimensions (mm)
Pin 1
A
B
C
E
A
2.54 +/- 0.05
B
12.70 +/- 0.2
C
D
15.24 +/- 0.2
D
14.0 +/- 0.2
E
2.54 +/- 0.05
Figure 4.2 TTL-234X-5V TTL-234X-3V3, 6 Way Header Mechanical Details
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4.2 TTL-234X-5V & TTL-234X-3V3 Cable Signal Descriptions
Header Pin
Name
Type
Colour
1
GND
GND
Black
Device ground supply pin.
2
CTS#
Input
Brown
Clear to Send Control input / Handshake signal.
3
VCC
Output
Red
4
TXD
Output
Orange
Transmit Asynchronous Data output.
5
RXD
Input
Yellow
Receive Asynchronous Data input.
6
RTS#
Output
Green
Request To Send Control Output / Handshake signal.
Number
Description
+5V output,
Table 4.1 TTL-234X-5V and TTL-234X-3V3 Cable Signal Descriptions
4.3 TTL-234X-5V & TTL-234X-3V3 Electrical Parameters
4.3.1 TTL-234X-5V Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
VCC
Supply Voltage
4.75
5.0
5.25
V
port that the TTL-234X5V is connected to
Assuming connected
Icc
Supply Current
-
-
450
mA
to direct to a host
port or a powered
hub, and enumerated
T
Operating Temperature
Range
-40
-
+85
o
C
Table 4.2 TTL-234X-5V Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant to the USB
Voh
Output Voltage High
4.75
5.0
5.25
V
Vol
Output Voltage Low
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Vil
Vih
Input Low Switching
Threshold
Input High Switching
Threshold
port is connected to
Table 4.3 TTL-234X-5V I/O Pin Characteristics
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4.3.2 TTL-234X-3V3 Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
VCC
Supply Voltage
4.75
5.0
5.25
V
port that the TTL-234X3V3 is connected to
Assuming connected
to direct to a host
Icc
Supply Current
-
-
450
mA
port or a powered
hub, and
enumerated
T
Operating Temperature
Range
-40
-
+85
o
C
Table 4.4 TTL-234X-3V3 Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
2.97
VCCIO
VCCIO
V
Vol
Output Voltage Low
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Vil
Vih
Input Low Switching
Threshold
Input High Switching
Threshold
VCCIO=3.3V
Table 4.5 TTL-234X-3V3 I/O Pin Characteristics
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5
TTL-234X-5V-AJ & TTL-234X-3V3-AJ
The TTL-234X-5V-AJ and TTL-234X-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-234X-5V-AJ operates at +5V levels
and the TTL-234X-3V3-AJ operates at +3.3V levels. On these cables the VCC power is not transferred.
5.1 TTL-234X-5V-AJ,
TTL-234X-3V3-AJ Connector Pin Out and
Mechanical details
Figure 5.1 TTL-234X-5V-AJ and TTL-234X-3V3-AJ Pin Out
The mechanical details of the Audio Jack connector are shown in the following Figure 5.2.
3.0+/- 0.1
3.2+/- 0.1
2.6+/- 0.1
6.0+/- 0.1
3.5+/- 0.1
14.0 +/- 0.2
Dimensions in mm
Figure 5.2 TTL-234X-5V-AJ and TTL-234X-3V3-AJ Audio Jack Mechanical Details
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5.2 TTL-234X-5V-AJ & TTL-234X-3V3-AJ Cable Signal Description
Header Pin
Name
Type
Colour
TIP
TXD
GND
Black
Transmit Asynchronous Data output.
RING
RXD
Input
Brown
Receive Asynchronous Data input.
SLEEVE
GND
Output
Red
Number
Description
GND
Table 5.1 TTL-234X-5V-AJ and TTL-234X-3V3-AJ Cable Signal Descriptions
5.3 TTL-234X-5V-AJ & TTL-234X-3V3-AJ Electrical Parameters
5.3.1 TTL-234X-5V-AJ Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
Vcc
Operating Voltage
4.75
5.0
5.25
V
port that the TTL-234X5V-AJ is connected to
Io
T
Operating Current
Operating Temperature
Range
-
8
-40
8.3
+85
mA
Normal Operation
o
C
Table 5.2 TTL-234X-5V-AJ Operating Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
Voh
Output Voltage High
4.75
5.0
5.25
V
port that the TTL-234X-5VAJ is connected to
Vol
Vil
Vih
Output Voltage Low
Input Low Switching
Threshold
Input High Switching
Threshold
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Table 5.3 TTL-234X-5V-AJ I/O Pin Characteristics
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5.3.2 TTL-234X-3V3-AJ Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
Vcc
Operating Voltage
4.75
5.0
5.25
V
port that the TTL-234X3V3-AJ is connected to
IO
T
Operating Current
Operating Temperature
Range
-
8
-40
8.3
+85
mA
Normal Operation
o
C
Table 5.4 TTL-234X-3V3-AJ Operating Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
2.97
VCCIO
VCCIO
V
Vol
Output Voltage Low
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Vil
Vih
Input Low Switching
Threshold
Input High Switching
Threshold
VCCIO=3.3V
Table 5.5 TTL-234X-3V3-AJ I/O Pin Characteristics
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6
TTL-234X-5V-WE and TTL-234X-3V3-WE Cables
The TTL-234X-5V-WE and TTL-234X-3V3-WE cables are both un-terminated; they are bare and tinned
wires. The difference between the two cables is that the TTL-234X-5V-WE operates at +5V levels (signals
and power supply) and the TTL-234X-3V3-WE operates at +3.3V levels (signals only, VCC=+5V).
6.1 TTL-234X-5V-WE,
TTL-234X-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-234X5V-WE and TTL-234X-3V3-WE cables.
VCC
GND
1
1
BLACK
CTS#
2
2
BROWN
VCC
3
TXD
3
RED
4
4
ORANGE
RXD
5
5
YELLOW
RTS#
6
6
GREEN
CABLE 1.8m
Figure 6.1 TTL-234X-5V-WE and TTL-234X-3V3-WE Connections
Figure 6.2 TTL-234X-5V-WE and TTL-234X-3V3-WE Mechanical Details (dimensions in mm)
6.2 TTL-234X-5V-WE
and
TTL-234X-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
Green
RTS#
Output
Receive Asynchronous Data input.
Request To Send Control Output / Handshake signal.
Table 6.1 TTL-234X-5V-WE and TTL-234X-3V3-WE Cable Signal Descriptions
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6.3 TTL-234X-5V-WE & TTL-234X-3V3-WE Electrical Parameters
6.3.1 TTL-234X-5V-WE Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
VCC
Supply Voltage
4.75
5.0
5.25
V
port that the TTL-234X-5VWE is connected to
Assuming connected to
Icc
Supply Current
-
-
450
mA
direct to a host port or
a powered hub, and
enumerated
T
Operating Temperature
Range
-40
+85
o
C
Table 6.2 TTL-234X-5V-WE Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
Voh
Output Voltage High
4.75
5.0
5.25
V
port that the TTL-234X-5VWE is connected to
Vol
Vil
Vih
Output Voltage Low
Input Low Switching
Threshold
Input High Switching
Threshold
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Table 6.3 TTL-234X-5V-WE I/O Pin Characteristics
6.3.2 TTL-234X-3V3-WE Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
4.75
5.0
5.25
V
Conditions
Dependant on the USB
VCC
Supply Voltage
port that the TTL-234X3V3-WE is connected to
Assuming connected to
Icc
Supply Current
-
-
450
mA
direct to a host port or
a powered hub, and
enumerated
T
Operating Temperature
Range
-40
+85
o
C
Table 6.4 TTL-234X-3V3-WE Electrical Parameters
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Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
2.97
VCCIO
VCCIO
V
Vol
Output Voltage Low
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Vil
Vih
Input Low Switching
Threshold
Input High Switching
Threshold
VCCIO=3.3V
Table 6.5 TTL-234X-3V3-WE I/O Pin Characteristics
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
7
TTL-234X-3V3-2mm Cable
The TTL-234X-3V3-2mm cable is terminated by an 8 way, 2mm pitch, Single-In-Line (SIL) keyed
connector. The TTL-234X-3V3-2mm operates at +3.3V levels (signals only, VCC=+5V). These cables are
primarily intended for interfacing the FTDI VDRIVE2 and VMUSIC2 modules.
Note that when connected to VDRIVE2 or VMUSIC2 module, the TTL-234X-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-234X-3V3-2mm
Connector
Pin
Out
and
Mechanical
details
8 pin header
2mm pitch
VCC
GND
1
8
CTS#
7
VCC
6
TXD
5,1
BLUE
2
CABLE 1.8m
KEY
3
4
RXD
4
RTS#
3
5
GREEN
YELLOW
ORANGE
6
RED
7
BROWN
8
BLACK
Figure 7.1 TTL-234X-3V3-2mm, 8 Way Header Pin Out
The mechanical details of the 2mm pitch 8 way, keyed, connector are shown in the following diagram
Dimensions (mm)
B
Pin 1
C
A
A
2.00 +/- 0.005
B
14.00 +/- 0.2
E
C
16.40 +/- 0.2
D
7.10 +/- 0.25
E
2.00 +/- 0.005
D
Figure 7.2 TTL-234X-3V3-2mm, 2mm pitch, Keyed, 8 way Header Mechanical Details
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
7.2 TTL-234X-3V3-2mm Cable Signal Descriptions
Header Pin
Number
Name
Type
Colour
Description
Ring Indicator Control Input. When remote wake up is
1
RI#
Output
Blue
enabled taking RI# low (20ms active low pulse) can be
used to resume the VMUSIC2 or VDRIVE2 host controller
from suspend. Connected to TXD.
This connection is keyed to connect to the VRDIVE2 or the
2
KEY
KEY
KEY
3
RTS#
Output
Green
Request To Send Control Output / Handshake signal.
4
RXD
Input
Yellow
Receive Asynchronous Data input.
5
TXD
Output
Orange
Transmit Asynchronous Data output.
6
VCC
Output
Red
7
CTS#
Input
Brown
Clear to Send Control input / Handshake signal.
8
GND
GND
Black
Device ground supply pin.
VMUSIC2 modules
+5V output,
Table 7.1 TTL-234X-3V3-2mm Cable Signal Descriptions
7.3 TTL-234X-3V3-2mm Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Dependant on the USB
VCC
Supply Voltage
4.75
5.0
5.25
V
port that the TTL-234X3V3-2mm is connected to
Assuming connected to
Icc
Supply Current
-
-
450
mA
direct to a host port or
a powered hub, and
enumerated
T
Operating Temperature
Range
-40
+85
o
C
Table 7.2 TTL-234X-3V3-2mm Electrical Parameters
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh
Output Voltage High
2.97
VCCIO
VCCIO
V
Vol
Output Voltage Low
-
0
0.4
V
-
-
0.8
V
LVTTL
2
-
-
V
LVTTL
Vil
Vih
Input Low Switching
Threshold
Input High Switching
Threshold
VCCIO=3.3V
Table 7.3 TTL-234X-3V3-2mm I/O Pin Characteristics
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8
Cable PCB Circuit Schematic
The circuit schematic for the small internal electronic circuit board, utilising the FTDI FT234XD, 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).
Figure 8.1 Circuit Schematic of PCB Used in the TTL to USB Serial Converter Cables
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
9
Contact Information
Head Office – Glasgow, UK
Branch Office – Tigard, Oregon, USA
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
Future Technology Devices International Limited (USA)
7130 SW Fir Loop
Tigard, OR 97223-8160
USA
Tel: +1 (503) 547 0988
Fax: +1 (503) 547 0987
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
sales1@ftdichip.com
support1@ftdichip.com
admin1@ftdichip.com
us.sales@ftdichip.com
us.support@ftdichip.com
us.admin@ftdichip.com
Branch Office – Taipei, Taiwan
Branch Office – Shanghai, China
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 8791 3576
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)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
tw.sales1@ftdichip.com
tw.support1@ftdichip.com
tw.admin1@ftdichip.com
cn.sales@ftdichip.com
cn.support@ftdichip.com
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 FTD I. 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 a nd 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, Un it 1, 2
Seaward Place, Centurion Business Park, Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640
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Datasheet
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
Appendix A - Cable MTP MEMORY Configuration
Each TTL-234X cable is controlled by the FTDI FT234XD IC. This FT234XD device contains an MTP
MEMORY which contains the USB configuration descriptors for that device. When the cable is plugged into
a PC or a USB reset is performed, the PC will read these descriptors. The default values stored into the
internal MTP MEMORY are defined in Table 0.1
Parameter
Value
USB Vendor ID (VID)
0403h
FTDI default VID (hex)
USB Product UD (PID)
6015h
FTDI default PID (hex)
Serial Number Enabled?
Notes
Yes
A unique serial number is generated and programmed
Serial Number
See Note
into the MTP MEMORY during device final test.
Enabling this option will make the device pull down on the
Pull down I/O Pins in USB
Suspend
Manufacturer Name
Disabled
UART interface lines when the power is shut off (PWREN#
is high).
FTDI
Product description depends on the cable. The following
lists the Product description for each different cable.
TTL-234X-5V
TTL-234X-3V3
Product Description
See note
TTL-234X-5V-AJ
TTL-234X-3V3-AJ
TTL-234X-5V-WE
TTL-234X-3V3-WE
TTL-234X-3V3-2mm
Max Bus Power Current
Power Source
Device Type
90mA
Bus Powered
FT234XD
Returns USB 2.0 device description to the host.
USB Version
0200
Note: The device is a USB 2.0 Full Speed device (12Mb/s)
as opposed to a USB 2.0 High Speed device (480Mb/s).
Remote Wake Up
Disabled
Load VCP Driver
Enabled
Invert TXD
Disabled
Signal on this pin becomes TXD# if enable.
Invert RXD
Disabled
Signal on this pin becomes RXD# if enable.
Invert RTS#
Disabled
Signal on this pin becomes RTS if enable.
Invert CTS#
Disabled
Signal on this pin becomes CTS if enable.
Makes the device load the VCP driver interface for the
device
Table 0.1 Default Internal MTP MEMORY Configuration
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The internal MTP MEMORY in the cable can be re-programmed over USB using the utility program
FT_PROG. FT_PROG can be downloaded from the www.ftdichip.com. Version 2.8a or later is required for
the FT234XD chip. Users who do not have their own USB Vendor ID but who would like to use a unique
Product ID in their design can apply to FTDI for a free block of unique PIDs. Contact FTDI support for this
service.
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
Appendix B - List of Figures and Tables
List of Figures
Figure 1.1 Using the TTL-234X Cable .............................................................................................. 1
Figure 4.1 TTL-234X-5V and TTL-234X-3V3, 6 Way Header Pin Out .................................................. 10
Figure 4.2 TTL-234X-5V TTL-234X-3V3, 6 Way Header Mechanical Details ......................................... 10
Figure 5.1 TTL-234X-5V-AJ and TTL-234X-3V3-AJ Pin Out ............................................................... 13
Figure 5.2 TTL-234X-5V-AJ and TTL-234X-3V3-AJ Audio Jack Mechanical Details ................................ 13
Figure 6.1 TTL-234X-5V-WE and TTL-234X-3V3-WE Connections ...................................................... 16
Figure 6.2 TTL-234X-5V-WE and TTL-234X-3V3-WE Mechanical Details (dimensions in mm) ................ 16
Figure 7.1 TTL-234X-3V3-2mm, 8 Way Header Pin Out ................................................................... 19
Figure 7.2 TTL-234X-3V3-2mm, 2mm pitch, Keyed, 8 way Header Mechanical Details ......................... 19
Figure 8.1 Circuit Schematic of PCB Used in the TTL to USB Serial Converter Cables ........................... 21
List of Tables
Table 1.1 TTL-234X Cables Descriptions and Part Numbers ................................................................ 2
Table 4.1 TTL-234X-5V and TTL-234X-3V3 Cable Signal Descriptions ................................................ 11
Table 4.2 TTL-234X-5V Electrical Parameters ................................................................................. 11
Table 4.3 TTL-234X-5V I/O Pin Characteristics ............................................................................... 11
Table 4.4 TTL-234X-3V3 Electrical Parameters ............................................................................... 12
Table 4.5 TTL-234X-3V3 I/O Pin Characteristics.............................................................................. 12
Table 5.1 TTL-234X-5V-AJ and TTL-234X-3V3-AJ Cable Signal Descriptions ....................................... 14
Table 5.2 TTL-234X-5V-AJ Operating Parameters............................................................................ 14
Table 5.3 TTL-234X-5V-AJ I/O Pin Characteristics ........................................................................... 14
Table 5.4 TTL-234X-3V3-AJ Operating Parameters .......................................................................... 15
Table 5.5 TTL-234X-3V3-AJ I/O Pin Characteristics ......................................................................... 15
Table 6.1 TTL-234X-5V-WE and TTL-234X-3V3-WE Cable Signal Descriptions .................................... 16
Table 6.2 TTL-234X-5V-WE Electrical Parameters ........................................................................... 17
Table 6.3 TTL-234X-5V-WE I/O Pin Characteristics.......................................................................... 17
Table 6.4 TTL-234X-3V3-WE Electrical Parameters .......................................................................... 17
Table 6.5 TTL-234X-3V3-WE I/O Pin Characteristics ........................................................................ 18
Table 7.1 TTL-234X-3V3-2mm Cable Signal Descriptions ................................................................. 20
Table 7.2 TTL-234X-3V3-2mm Electrical Parameters ....................................................................... 20
Table 7.3 TTL-234X-3V3-2mm I/O Pin Characteristics ..................................................................... 20
Table 0.1 Default Internal MTP MEMORY Configuration .................................................................... 23
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TTL234X SERIES RANGE OF CABLES
Datasheet
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Document Reference No.: FT_001394 Clearance No.: FTDI#520
Appendix C - Revision History
Document Title:
TTL234X Series Range of Cables Datasheet
Document Reference No.:
FT_001394
Clearance No.:
FTDI#520
Driver Page:
http://www.ftdichip.com/FTDrivers.htm
Document Feedback:
Send Feedback
Revision
Version 1.0
Changes
Date
Initial Release
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