SN74LVC4245A dt/dv requirement

Frank Xiao

Genius 12055 points

Other Parts Discussed in Thread: SN74LVC4245A, SN74LVC14A, LSF0108

Hi team,

Does the chip SN74LVC4245A have dt/dv requirement?

I check the datasheet of SN72hct244, the chip has dt/dv requirement.

Could you please help me check it?

Frank

over 8 years ago

0 aozer over 8 years ago

TI__Mastermind 26875 points

Hello Frank,

Since it is not specified in the datasheet, I would recommend meeting the requirement for LVC devices found here:

0 Frank Xiao over 8 years ago in reply to aozer

TI__Genius 12055 points

Hi Aozer,

Thank you for your help. My customer needs level shift from 3.3v to 5v. And the dt/dv >200ns/V. Do you have some recommendations? I need to recommend the device to the customer tomorrow. Thank you.

BR
Frank

0 ShreyasRao over 8 years ago in reply to Frank Xiao

TI__Guru 58230 points

Hi Frank ,

Having a Schmitt trigger buffer device like SN74LVC14A would be ideal . The Schmitt trigger devices do not have input transition rate requirements since they can tolerate slow rising edge inputs .

0 Frank Xiao over 8 years ago in reply to ShreyasRao

TI__Genius 12055 points

Hi Shreyas,

Thank you. But my customer needs level shift and wants the positive logic. Do you have other recommendations?

BR
Frank

0 aozer over 8 years ago in reply to Frank Xiao

TI__Mastermind 26875 points

Frank,

As far as I know, we do not have any translators in our product line that can handle those requirements. Maybe Shreyas can recommend something from their product line.

0 ShreyasRao over 8 years ago in reply to aozer

TI__Guru 58230 points

You may consider LSF0108 which is passive translator without any transition rate requirements .

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SN74LVC4245A dt/dv requirement