Integrated Circuits part organization questions?

Other Hardware General Electronics
1

Hello all,

I recently bought someone's old electronics equipment. It was a real mix of things and I'm sorting them out.

There were a lot of Integrated Circuit's(IC), and I want to group the same IC together
-Should HEF4047BP be grouped with CD4047BCN
-Are the IC 74132 the same as 74LS132 (I'm wondering for organization reasons)
-The above question but for 7473, is this the same as 74LS73?

I've been looking at data sheets and some seem equivalent, but this will take a very long time to do this for all the similarly named chips.

Thanks for the help,
-Plot

2

Equivalent function; but different speeds, different power consumption, different Input load currents, different Output drive capability.

3

Hi, google questions like "difference between 7400 and 74LS00?"
and you wil find the answer to these questions, as Crossroads says, different speeds and such, including different voltage requirements.

Tom..... :slight_smile:

4

Hi, try this ppt file..
It discusses all form of digital logic and a table at the end does a simple comparison.

Hope it helps Tom.... :slight_smile:

Logic Families intro.pptx (681 KB)

5

plain 74xx series are old TTL
74LSxx are low-power schottky TTL
CD40xx are old CMOS (3 to 15V, slow)
HEF40xx are modern high-speed CMOS (basically the same specs as 74HCxx I think)
74HCxx are 2V .. 6V high speed CMOS (*)
74HCTxx are 5V TTL-compatible high speed CMOS.

There are many more obscure families, wikipedia is your
friend for that IIRC.

All the CMOS variants need anti-static precautions when handling,
especially the old CD40xx series.

(*) The commonest modern 5V logic family in use now.

6

Ok, thanks for the help/information.

Looks like I have some old chips on my hands :slight_smile:

7

best to just write all the parts down on a spreadsheet.
then note what box they are in. all mixed up is fine.
two columns is all you need.

then, when you need an LM393 , search the list, find that box and look over the chips in that box.

it would be a waste of time to document all the chips and then their functions if you never need 90% of them.

8

dave-in-nj:
best to just write all the parts down on a spreadsheet.
then note what box they are in. all mixed up is fine.

Yep.

Trying to categorize chips is like trying to categorize music. Some is easy, some just doesn't fit anywhere.