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baudrate 11920
I've actually used 1uf non-polarized ceramic surface mount caps without issue on the TI max232 chip. It's cheap, and I needed small footprint surface mount components.
asd
Hi Dan,
I think you've chosen a problem that has some terrible hurdles. First, the suggested method would not work.
A transformer can only convert AC current from one line to the other; DC will simply run through like a short. A power cap will not be able to hold enough charge to produce...
I've never had to build one of these but my idea would be to use a programmable filter.
As the slew rate is a property of the driver, it's can't directly be changed. However, we should consider that a squarewave is simply made up of a number of harmonics. These separate signals can...
reciprocity theorem in network analysis
**broken link removed**
I really feel for those in the world that are restricted from completing a google search. :roll:
asd913
I know its kind of a pain in the butt, but have you tried a two-port cal (even though you're using one port). It should give you a bit more information to work with.
That's a really large frequency range. Have you considered cal'ing the vna for smaller increments?
best regards,
asd
as requested, here is a schematic.
everyone feel free to correct an issues and mistakes. I'm assuming your using a 4 bit data bus which requires a total of seven lines.
Cheers,
asd913
I forgot to mention that each of these 74cbt3384's can be used to mux five lines at a time. You need to connect the two outputs buses together.
for instance, 1b1=2b1, 1b2=2b2, etc.
asd913
edit:
on second thought, looking at the pinout, it might be easier connecting opposite sides together...
https://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=358708&Row=53097&Site=US
https://focus.ti.com/lit/ds/symlink/sn74cbt3384a.pdf
This should work for you. all you need is a few of these 74cbt3384's, a mechanical switch, and an inverter. Just invert /OE1 and connect it to /OE2...
Like my circuits teacher used to say, there's probably a thousand ways to do this. Just choose one your comfortable with.
Me, I've already built a couple projects where I made use of the I2C bus to communicate between two PICs.
Using a 3rd pic and having the dual bus masters is one...
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