Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!rpi!sci.ccny.cuny.edu!sukenick
From: sukenick@sci.ccny.cuny.edu (SYG)
Newsgroups: sci.electronics
Subject: Re: Termination of TTL <-> TTL cable
Message-ID: <1990Aug8.152029.11173@sci.ccny.cuny.edu>
Date: 8 Aug 90 15:20:29 GMT
References: <26b48046.147d@petunia.CalPoly.EDU> <5728@milton.u.washington.edu>
Distribution: na
Organization: City College of New York - Science Computing Facility
Lines: 9

>to the DRIVING) end of the wire with 220 ohms to +5V and 330 ohms 
>to GND.  Resistor packs with this termination pair are available 

And, if your environment is noisy, two fast reversed bias diodes (one
to ground, the other to +).   We had the strangest problems with our
counter until we added the diodes (our environment is very noisy,
but very well shielded; still the glitches got through enough to 
lockup the counter. Then again, the counter was some HCATLSXXXZXZXZ
nonsense).