TTL234X SERIES RANGE OF CABLES Datasheet
Version 1.0
Document Reference No.: FT_001394 Clearance No.: FTDI#520
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
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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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