6 Nov
2011
6 Nov
'11
10:46 a.m.
On 6 Nov 2011 at 1:00, David Riley wrote:
> We did, however, like the 74AVC4T245 for voltage
translation.
That
almost fits your dual-supply bill, only the AVC parts
don't go up to
the full 5v. For that, your best bet would be in the LVC family; they
have some dual-rail '245 and similar equivalents (e.g. the
SN74LVC8T245).
Nothing in DIP, though, so if you really wanted that
you'd have to mount them to surfboards (I really like the ones by
Bellin at http://www.beldynsys.com/; not cheap, but pretty nice
protoboards the do mount up nicely).
Those are fine for prototypes, but you can get pretty much the same
thing cheaper at Futurlec:
http://futurlec.com/SMD_Adapters.shtml
And even those are somewhat overpriced. I picked up a small pile of
100-pin adapters for PIC32 from TeamETT that have spots for all of
the close-in components (mostly chip caps and some resistors) as well
as a header for an ICD2 programmer hookup for about $0.50 each and
they even came in a cloth drawstring bag. I figure that the people
in Thailand being flooded out could do with a little help. Better
than sending your money to China.
http://www.etteam.com/
Some very fun stuff there.
I'm after a level-shifter that I can put in a socket on a production
board, not on a prototype, so it can be easily replaced by a
relatively unskilled person.
--Chuck