[sdiy] 4514 w/4516

[Tom Arnold]

On Sun, Jan 16, 2005 at 04:15:22PM +0100, Magnus Danielson wrote:
> I don't see what you describe in the datasheet I am looking at, or maybe I just
> don't understand your real problem. Having the clock output signals being
> synchronous should not be a problem. You may have a problem relating to when
> you change the control-pins thought, since that leaks through the combinatorial
> way and is not clocked.

I'm looking at the TI datasheet downloaded from alldatasheet.co.kr.
Page 5 of the PDF labeled 3-253, Figure 16.

If you look at the CARRY OUT line, when it counts to 0 ( colume 21 ) there
is a definate lag past the clock leading edge.

My test setup is two 4516's basically wired in parallel except CO -> CI.

I'm only flogging this dead horse because thats what I could See with my
little LED's hooked up, step 16 -> 17 lagged a tiny but visible amount.

> Well, well, be carefull, it's a dark force you know, very dark... and it is not
> as beutifull in the morning as you was beleived to see in the morning, I have
> warned you! ;O)
> 

But it *was* morning, 7am in fact when I finally went to bed.  Bad
combination, a James Bond marathon on TV and DIY to do...

-- 
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 - Tom Arnold       -  Free Synth DIY webspace http://www.sdiy.org 
 - SynthGeek        -
 - BBD Fanatic      -  "...is it a virus, a drug, or a religion?" 
 - echo evho wjxo   -    Juanita Shrugs. "What's the difference?" 
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