max232 cap

H

homemade24

New Member

• May 22, 2008

• #1

I looking at using a max232 and it show 2 charge pump caps. anything special
about these or will any elect. cap the right size work
thanks

 

ericgibbs

Well-Known Member

Most Helpful Member

• May 22, 2008

• #2

homemade24 said:

I looking at using a max232 and it show 2 charge pump caps. anything special
about these or will any elect. cap the right size work
thanks

Click to expand...

hi,
Electrolytics are often used with no problems, use the recommended values with a 16Vwkg rating.

 

Boncuk

New Member

• May 22, 2008

• #3

Hi,

use the MAX233 - no external charge pump caps - same function. Everything is on board already.

Boncuk

 

P

petrv

New Member

• May 22, 2008

• #4

Yes that's correct. But you can get the 232 chip significantly cheaper, even including the price of the caps.

 

philba

New Member

• May 22, 2008

• #5

also, be aware that there is an A version (232 vs 232A) that uses smaller caps. I prefer the A since I can use ceramics.

 

Last edited: May 22, 2008

H

homemade24

New Member

• May 22, 2008

• #6

thanks
so I guess my option are
232 with Electrolytics cap of the right value
233 no caps
232A smaller ceramic cap

 

DigiTan

New Member

• May 22, 2008

• #7

I've used monolithics quite successfully in at least 5 designs. Like any other charge pump, just make sure they're voltage-rated higher than your output voltage.