Author Topic: Compatible ICs  (Read 2097 times)

0 Members and 1 Guest are viewing this topic.

Offline FPTECTopic starter

  • Newbie
  • Posts: 8
  • Country: br
Compatible ICs
« on: July 01, 2017, 04:10:31 am »
Hello,

It is common not to have an IC for substitutes, so finding a compatible one would make it easier. But in many cases this has become complicated.

What do you do in these cases to find a compatible one?  :-//

Thanks.
 

Online tautech

  • Super Contributor
  • ***
  • Posts: 28139
  • Country: nz
  • Taupaki Technologies Ltd. Siglent Distributor NZ.
    • Taupaki Technologies Ltd.
Re: Compatible ICs
« Reply #1 on: July 01, 2017, 04:22:30 am »
What IC's do you need and where have you tried to source them from ?
Avid Rabid Hobbyist
Siglent Youtube channel: https://www.youtube.com/@SiglentVideo/videos
 
The following users thanked this post: FPTEC

Offline FPTECTopic starter

  • Newbie
  • Posts: 8
  • Country: br
Re: Compatible ICs
« Reply #2 on: July 01, 2017, 04:27:17 am »
It is not a specific case. Sometimes I can, sometimes not.

I would like to know the methods used by the most experienced.
 

Online tautech

  • Super Contributor
  • ***
  • Posts: 28139
  • Country: nz
  • Taupaki Technologies Ltd. Siglent Distributor NZ.
    • Taupaki Technologies Ltd.
Re: Compatible ICs
« Reply #3 on: July 01, 2017, 04:36:05 am »
It is not a specific case. Sometimes I can, sometimes not.

I would like to know the methods used by the most experienced.
More info required.

As we have no idea which continent you're on we can't give recommendations for sources.
You can fix that by adding either a location or a country flag in your profile.
Avid Rabid Hobbyist
Siglent Youtube channel: https://www.youtube.com/@SiglentVideo/videos
 

Offline FPTECTopic starter

  • Newbie
  • Posts: 8
  • Country: br
Re: Compatible ICs
« Reply #4 on: July 01, 2017, 05:00:50 am »
Done...

As you can see now in my profile, I am a beginner.

Despite this, the location has never been a barrier for me to get information, so much that I posted in this forum.

Awaiting...  :-+
 

Online tautech

  • Super Contributor
  • ***
  • Posts: 28139
  • Country: nz
  • Taupaki Technologies Ltd. Siglent Distributor NZ.
    • Taupaki Technologies Ltd.
Re: Compatible ICs
« Reply #5 on: July 01, 2017, 07:20:46 am »
It is common not to have an IC for substitutes, so finding a compatible one would make it easier. But in many cases this has become complicated.

What do you do in these cases to find a compatible one?  :-//
Unless it's very old most can be found if you look hard enough.
Google can find most with the right keywords.

If they're logic IC's sometimes one with the same functionality and pinout can be found in the other families of logic IC's.
Datasheets are the key to ANY substitution and understanding datasheets is very important.
It's a bit like being able to build a house but not able to read or understand the design plans.  :palm:
Avid Rabid Hobbyist
Siglent Youtube channel: https://www.youtube.com/@SiglentVideo/videos
 
The following users thanked this post: FPTEC

Offline FPTECTopic starter

  • Newbie
  • Posts: 8
  • Country: br
Re: Compatible ICs
« Reply #6 on: July 01, 2017, 07:37:20 am »
Actually, the search for pinouts + .PDF I already use.

But it usually returns few results most of the time.

So I'm looking for other ways, knowledge is never too much ....
 

Offline CJay

  • Super Contributor
  • ***
  • Posts: 4136
  • Country: gb
Re: Compatible ICs
« Reply #7 on: July 01, 2017, 08:19:50 am »
Datasheets, experience, schematic of the board the device is fitted to, all useful.

Logic function chips are fairly easy to substitute unless it's being used on the ragged edge of the specification or is even being used for some non obvious function (74LS logic chips being used as RF amplifiers for instance)

Some chips you'll never get a substitute for, even when you can buy the chip they are programmed at factory and you can't get the code or the programmer is ridiculously expensive.

many analogue chips were multi source and available under different part numbers (LA1230, CA3089 and a 3rd part I can't remember the number of are pin and function compatible for instance), yet more chips you can replace with near equivalents or upgraded versions with minimal modification of the circuit.

Google will get you so far and you'll find you get better at finding substitutes as your experience grows, if you've done your research and haven't got anywhere then come and ask in here, people will usually help if they can and may even off the parts you need.
 
The following users thanked this post: FPTEC


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf