(no subject)
- From: javi del <javodv@xxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 17 Sep 2002 09:40:40 +0200 (CEST)
Hello to all,
I would like to analize the timing in the following
interface: UC + optocoupler + DAC. The Dac and the uc
are connected with SPI. I would like to know which is
the highest frecuency for this. My doubt is that when
I see the optocoupler timing parameter I find:
tplh: propagation delay time to high output level
[20,100] and typ. 48 ns
tphl: propagation delay time to low output level
[25,100] and typ. 50 ns
tr: output rise 24ns
tf: output fall 10ns
pulse with distorsion: typ 3.5ns max 40ns
propagation delay skew: tpsk 40ns.
So if the clk signal enter to the optocoupler then
which parameter should I use for the clk_out delay to
risign and delay to falling??.
thanks a lot,
javi
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