SN74LVC1T45-Q1 Power-Up Considerations

Ryuuichi machida

Other Parts Discussed in Thread: SN74LVC1T45-Q1, SN74LVC1T45

Hi,

I would like you to confirm whether following sequence must be required for SN74LVC1T45-Q1 or not.

When I confirmed datasheet of SN74LVC1T45 (non Q1 device), then above requirement was NOT described. And also,datasheet of SN74LVC1T45-Q1 is older than datasheet of SN74LVC1T45.

Therefore, could you please confirm whether above sequence must be required for SN74LVC1T45-Q1 or not ?

Best Regards,

Machida

over 7 years ago

0 Nirav Patel over 7 years ago

TI__Expert 6335 points

Ryuuichi,

I believe the same sequence would apply. I am moving this thread to the automotive forum, as the applications engineer in that forum support the Q1 version of the SN74LVC1T45 and can provide you with accurate support. Thanks.

Best Regards,
Nirav

0 Mahmoud Harmouch over 7 years ago in reply to Nirav Patel

TI__Mastermind 24740 points

It could be the high temp is behind the power up sequencing requirement. I need to verify it on bench. Please allow couples days for completing this verification.

0 Ryuuichi machida over 7 years ago in reply to Mahmoud Harmouch

Guru 11515 points

Hi Harmouch-san,

Thank you for your reply and response.

>I need to verify it on bench. Please allow couples days for completing this verification.

Understood.

Let me confirm one thing.

* According to your comment, I believe that this power up sequence is NOT required for SN74LVC1T45 (non Q1 device) , right ?

(What I want to confirm is you do NOT have plan to add this requirement in datasheet of SN74LVC1T45 (non Q1 device).)

Best Regards,

Machida

0 Mahmoud Harmouch over 7 years ago in reply to Ryuuichi machida

TI__Mastermind 24740 points

Machida-san, I' m only supporting the Q1 parts and I do not have control over non Q1 datasheet. But I will discuss the issue with the commercial team for non Q1 datasheet.

0 Ryuuichi machida over 7 years ago in reply to Mahmoud Harmouch

Guru 11515 points

Hi Harmouch-san,

Thank you for your reply.

>But I will discuss the issue with the commercial team for non Q1 datasheet.

Thank you four your response.

However, to begin w/, I would like you to send confirmation result about below.

>It could be the high temp is behind the power up sequencing requirement. I need to verify it on bench. Please allow couples days for >completing this verification.

Answer for my questions about non Q1 device is OK after performing above verification.

Thanks in advance,

Machida

0 Ryuuichi machida over 7 years ago in reply to Ryuuichi machida

Guru 11515 points

Hi Harmouch-san,

Is there any update about below ?

It could be the high temp is behind the power up sequencing requirement. I need to verify it on bench. Please allow couples days for completing this verification.

Thanks in advance,

Machida

0 Mahmoud Harmouch over 7 years ago in reply to Ryuuichi machida

TI__Mastermind 24740 points

From bench test and according to commercial apps, there is no power sequence requirement.

0 Ryuuichi machida over 7 years ago in reply to Mahmoud Harmouch

Guru 11515 points

Hi Harmouch-san,

Thank you for your reply.
>there is no power sequence requirement.
Does it mean that you will remove above sequence from datasheet in the future ?

Best Regards,
Machida

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SN74LVC1T45-Q1 Power-Up Considerations