[sdiy] bypass caps for TTL

[phillip m gallo]

Jim,

Don't toss your 7406's and 7407's they are still quite handy.

regards,
p


-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of James Patchell
Sent: Thursday, March 10, 2005 5:04 PM
To: rkmoore at memphis.edu; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] bypass caps for TTL


Ceramic Multi layer, .1uF is what I always used...TTL...talk about
retro.  I am packing up all of my old TTL chips and getting ready to
"dispose" of them.  I pretty much consider them to be fairly useless these
days.

         Trouble is, in my collection, I have some rather unique ones.  The
most unique?....Well that would be some SN74S482s which are a 4 bit slice
micro code sequencer chip.  I also have a few SN74ALS384 and SN74ALS385s
which are a serial multiplier and a serial adder/subtractor chips
respectfully.  Still trying to decide what to do with the more rare
chips.  I also have a whole bunch of 74F169 four bit up/down counters that
I was at one time thinking of making into a top octave generator...but that
kind of job is now left to FPGA's...

         -Jim

At 09:14 AM 3/10/2005 -0600, rkmoore at memphis.edu wrote:
>Hi everyone,
>
>I'm working on a project for school that uses lots of TTL IC's.  I
>remember hearing that I should probably use bypass capacitors between
>the +Vcc and ground on each IC.  What type of caps should I use and
>what value?  Any suggestions?
>
>Thanks,
>
>Richard Moore

         -Jim
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