Post
Topic
Board Hardware
Re: Klondike - 16 chip ASIC Open Source Board - Preliminary
by
BkkCoins
on 26/07/2013, 01:44:32 UTC
Having a look at the 74AUP2G02 data sheet it looks like the SOT996-2 package is very close to the VSSOP8 (SOT765-1) package. For DIY I think you could easily use that part on the same footprint. It's a QFN style pkg, no leads.

Be careful though as there is a variety of similar packages.
This one is the 74AUP2G02GD which Digikey has 2860 in stock, min. 1pc.


I looked at the datasheet in detail, and turns out that 74AUP2G02GD can be used for SMT assembly as well, without modifying the board in any way.

The following is basically the same thing, except for the operating temperature rate (40 to 85 Celsius, as compared to 40 to 125 Celsius). I have no idea how it will behave if the temp rises 85 C.
http://www.digikey.com/product-detail/en/74AUP2G02DC,125/568-9186-2-ND/1300786

It shouldn't get that hot, and you wouldn't want to let it as if it gets there, then for sure the ASICs are well  beyond, and they are rated for 85C as well. So any 125C parts are simply for enhanced durability / longer life.