11 Mar
2005
11 Mar
'05
3:26 p.m.
Eric Smith wrote:
If all else fails you can solder the SOICs onto carrier
boards that
will plug into DIP sockets.
This is most likely what I will do.
What's wrong with CMOS parts for interfacing?
I have a rug and a cat in my apartment. Meow walk ... zap
I forgot to add , I like things socketed.
Available in DIP. 74LVC runs on 3V but has 5V tolerant
inputs, so it
can be used to interface 3V CMOS to 5V TTL in both directions.
When powered by 3V, 74LVC outputs will not go above 3V, so they can't
drive pure 5V CMOS inputs. However, many 5V VLSI CMOS parts will work
with TTL-level inputs (min 2.0V Vih), so 3V 74LVC can drive those
just fine.
Now what about driving leds?
In general, if you want to build things with
state-of-the-art chips,
you're going to have to deal with SMT, whether you want to or not.
Straight 8's look better and better all the time. :)