From: Jim Brain (brain_at_jbrain.com)
Date: 2008-11-10 03:03:22
Wolfgang Moser wrote: > >> The next board revision of uIEC will use inverting open collector >> buffers, like the rest of the drives. MOSFETs and such are nice, but >> it's harder to stuff a board with them (as I noted to Shadowolf) and >> a buffer IC will accomplish the same thing. > > In a board solution that offers a power source, true > TTL or HCT buffers/drivers are the very, very best > option. I think so, too. > To make your design work the best, you should also > spend some 74LS14 / 74HCT14 input drivers with > integrated Schmitt triggers, this is what all the > cheap cable solutions are missing. > The ATmega controllers don't offer input pins with > Schmitt trigger funtion, do they? Are you recommending using these on the input lines (CLK_IN, ATN_IN, DATA_IN, SRQ_IN)? JIm Message was sent through the cbm-hackers mailing list
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