Altera ByteBlaster II schematic

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Leon

And does it work ?

Rene

on a

I mean to try it, when I get my Cyclone board finished.

Leon

It looks about right if SOT-23's were used for all the diodes and transistors.

Nial

A problem with this is that the BF550 and BF570 transistors used are unavailable - 20 weeks delivery according to Arrow. 8-(

I'll see if I can find equivalent devices.

Leon

Leon

I have tried the website, I even registered, but somehow, I cannot click on the "byteblaster.pdf" link to download. How do you get to download the file??

Thanks Ted

Click on the disk icon in the second column

on a

Since this is not a precision analog device, I guess any bipolar does the job. Basically two inverters to boost the voltage plus an emitter follower to lower the output impedance.

Rene

Did anyone succeed in getting it to run ? It appears to be too simple. Even simpler than the MV. Not partwise, but from the functionality.

I didn't even try as I get one from Altera. But, just in case one of my customers is going to need one ...

Rene

Basically they are the same. if you check the pinouts all that's been done is to make the levels far more variable. You could probably do the same job with 74VCX series from Fairchild except you would loose 5V operation. (but the comparator is a nice touch). I have seen a 3V3/5V version of this design but using logic gates already.

Sim>

on a

Can U, please, send me a byteblasterII schematic file if U have it. Thank U! Bojan

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