Hello Dear,I want to know what's meaning of suffix ":11".I already checked the "Packing Letter Codes used in Orderable Part Number",but no found.Thanks for your kind efforts.
Thank you for your inquiry.
The 74ALVC164245DGG has been transferred to Nexperia on 6-Feb-2017.
It means that this part does not belong to NXP anymore, the manufacturer is Nexperia.
For any questions/requests related to this part, please contact Nexperia directly.
Here are the contact details: https://www.nexperia.com/support/
Thank you.