Author Topic: Fastest four-pin optocoupler  (Read 2607 times)

0 Members and 1 Guest are viewing this topic.

Offline GallTopic starter

  • Frequent Contributor
  • **
  • Posts: 310
  • Country: ru
Fastest four-pin optocoupler
« on: September 04, 2011, 07:51:59 pm »
Hi,

I wonder if they are fast optocouplers in 4-pin DIP packages. I know PC817 and equivalents, they are 4 us typ. I'd like to look at dual, triple and quad units too as long as they are pin compatible with 4-pin units stacked together (like PC827? PC837 etc.)

It's all about pin compatibility (direct replacement in someone's else bad design). I already know many parts for indirect replacement, no, I do not need more :)
The difficult we do today; the impossible takes a little longer.
 

Offline jakeypoo

  • Regular Contributor
  • *
  • Posts: 56
  • Country: ca
Re: Fastest four-pin optocoupler
« Reply #1 on: September 09, 2011, 01:30:34 am »
You can lower the load resistance to increase response time as long as you don't go over recommended collector current.

If you want good performance I would stay with Sharp. PC813 series (pc823/pc843 [2/4 channel]) are quite good.

Obviously these are only pin compatible if the 4pin DIPs are spaced properly next to each other.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf