Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!amdcad!weitek!bogart!lupin
From: lupin@bogart.WEITEK.COM (Ed Lupin)
Newsgroups: comp.sys.mac
Subject: Appletalk signal drivers
Message-ID: <829@bogart.WEITEK.COM>
Date: 13 Oct 89 22:49:04 GMT
Reply-To: lupin@bogart.WEITEK.COM (Ed Lupin)
Organization: WEITEK, Sunnyvale CA
Lines: 13


Can someone please tell me what the current requirements are to
drive the Appletalk network, or better yet, a recommended circuit
that has worked well?  We plan to parallel two ICL7660's to get
sufficient -5V current, and use 26LS30's and 26LS32's, but is that
the most efficient method?  Our PC board space is limited.

Also, Inside Appletalk suggests that Appletalk may be driven unipolarly,
with +5V and 0V only.  I have my doubts.  Comments?

Thank you.

Ed