This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: SN74CBTLV3257
My customer is evaluating the SN74CBTLV3257 on their board, and they measured signal collision waveform at switching. Could you review their measurement waveform below and let me have your answers?SN74CBTLV3257 Waveform at signal collision 20200603.xlsx Q1) When switching the S pin, is it possible that both the SW of the B1 pin and the SW of the B2 pin are both turned ON at the same time?Q2) When switching the S pin, is there something like dead time provided for the B1 and B2 pins so that both do not turn on?Q3) Regarding this phenomenon, is it possible to prevent signal collision by controlling the /OE pin as shown below? '/OE=Low --> Switch /OE pin to High --> Wait 1ms --> Switch S pin --> Wait 1ms --> Switch /OE to LowQ4) Is there a measure other than the method described in Q3)?
This device does not do break-before-make switching. All FETs are switched at the same time, so it is possible for them to be partially open during switching.
It is indeed possible to use OE to introduce a dead time. Please note that tdis + ten is much shorter than 1 ms.
Consider using another device with the break-before-make feature, e.g., TS3A44159 or TMUX1134.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.