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- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!menudo.uh.edu!elroy.uh.edu!st1dr
- From: st1dr@elroy.uh.edu (Frankfort, David C.)
- Newsgroups: comp.sys.apple2
- Subject: Re: Hi-Speed Modems and //c
- Date: 18 Nov 1992 23:22 CST
- Organization: University of Houston
- Lines: 30
- Distribution: world
- Message-ID: <18NOV199223220797@elroy.uh.edu>
- References: <1992Nov12.065923.11659@mnemosyne.cs.du.edu> <c8922369.721741862@jupiter.newcastle.edu.au> <18NOV199210152482@rosie.uh.edu>
- NNTP-Posting-Host: elroy.uh.edu
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- In article <18NOV199210152482@rosie.uh.edu>, st1dr@rosie.uh.edu (Frankfort, David C.) writes...
- >>
- >>what are MC1488 (sob) and MC1489 (sib) ??? what do they do ?
- >>>leon
- >
- >I thought they converted serial information into parrellel info.
-
- Lets seee if can answer this now that I got the docs infront of me. The 1488 is
- a quad line driver while the 1489 is quad line receiver.
- the diagram for the 1488 is
- Vee 1 14 Vcc
- Input A 2 13 Input D1
- Output A 3 12 Input D2
- Input B1 4 11 Output D2
- Input B2 5 10 Input C1
- Output B 6 9 Input C2
- Gnd 7 8 Output C
- the diagram for 1489 is
- Input A 1 14 Vcc
- Response Control A 2 13 Input D
- Output A 3 12 Response Control D
- Input B 4 11 Output D
- Response Control B 5 10 Input C
- Output B 6 9 Response Control C
- Gnd 7 8 Output C
-
- I hope this helps!!!!!!!
- ********************************************************************************
- *David F. No silly quote. *
- ********************************************************************************
-