IIRC, MAX232x devices always need external capacitors. The "A" version
needs smaller caps than the older "non-A" version. 

It's the MAX233 devices that have internal caps.


Regards, Bob


On Sat, 14 May 2005 18:24:17 +0100, Dave Turner wrote:

>I thought the MAX232A was the one that had all the internal capacitors
>- are you sure you have the datasheet for the 232A, and not the 232
>(which i believe does need capacitors)?
>

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