SN74AVC4T234: PCB land pattern and stencil recommendations

user4782171

Part Number: SN74AVC4T234

Hi Team,

My customer got the PCN mentioned that SN74AVC4T234ZSUR will be EOL and recommended SN74AVC4T234ZWAR (new) for it.

From the PCN that mentioned that nFBGA provides the same X and Y dimensions as MicroStar BGA, and provides pin-to-pin and footprint compatibility. However the nFBGA PCB land pattern and stencil recommendations have been updated to achieve better soldering results after extensive testing and evaluation.

Here need your help to provide the PCB land pattern comparison table between SN74AVC4T234ZWAR and SN74AVC4T234ZSUE due to I can't find what the major difference from current datasheet.

Best regards,

Albert Lee.

over 3 years ago

0 Dylan Hubbard over 3 years ago

TI__Mastermind 44170 points

Hey Albert,

Both land patterns are provided in the data sheet for you to compare. The new NFBGA package is drop in compatible.

0 user4782171 over 3 years ago in reply to Dylan Hubbard

TI__Intellectual 1560 points

Hi Dylan,

Thanks but as I mentioned in past that I can't find any the land pattern deviation between these two from datasheet. Can you help yo point out which deviation items would be? Thanks.

Albert Lee.

0 Dylan Hubbard over 3 years ago in reply to user4782171

TI__Mastermind 44170 points

Hey Albert,

Why would there be deviations if they are identical packages?

0 user4782171 over 3 years ago in reply to Dylan Hubbard

TI__Intellectual 1560 points

Hi Dylan,

This is what I ask due to I can't find the deviation from the datasheet but there has the statement in PDN description: However the nFBGA PCB land pattern and stencil recommendations have been updated to achieve better soldering results after extensive testing and evaluation.

Customer just wants to make sure it's no any deviation would be. Could you help to check and just confirm this one?

Albert.

0 Dylan Hubbard over 3 years ago in reply to user4782171

TI__Mastermind 44170 points

Hey Albert,

If the customer already has a land pattern made, the new package will fit. If the customer does not have a land pattern made, they can use the land pattern recommendation in the back of the datasheet.

Logic

Logic forum

SN74AVC4T234: PCB land pattern and stencil recommendations