MAX3000A Ambient Temperature Range

See table 13 on page 23 of the max 3000a programmable logic device family data sheet (https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/ds/m3000a.pdf).

I'm suspicious of the reference to 0-85 via buyaltera. If you select any of the RoHS compliant commercial parts (...C..-..N) they also have a link to the above datasheet which states 0-70.

I (too) suggest you seek clarification from Altera.

Cheers,

Alex