Looking at the max23x datasheet I've got on my hard-drive(doc 19-4323;
Rev 6; 3/96) page 1 shows the max 232 1u (.1u) capacitors and in the Data
Rate (kbps) column it shows 120 (64) I would take this to mean that the 232
can do 120 kbps w/1u and 64 kbps w/.1u.
    The '232A is shown as achieving 200 kbps with .1u caps. I assume this
means the 232A charge pump operates at a higher frequency.
    To bring another thread into this, note that the acronym kbps is
ambiguous. Could be kilobits, could be kilobytes. Only by looking further
into the data sheet do we see kbits/sec spelled out. Therefore the 232 is
capable of 64000/(8+1+1)->6400 baud with .1u caps.

Brian

-----Original Message-----
From: Calvin <tgo@CHIH1.TELMEX.NET.MX>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Wednesday, March 04, 1998 12:29 PM
Subject: Another MAX232 question


In the MAX232 datasheet they indicate 1uF caps for the charge pump, but they
also show 0.1uF caps in parenthesis. As I understand it they mean that I can
still use it with the 0.1uF caps, but only achieve a lower speed; am I
right?
BTW, I could not find any info about the parenthesis values on the
datasheet.

TIA

Calvin

-----Original Message-----
From: Alessandro Zummo <azummo@ITA.FLASHNET.IT>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Miˇrcoles 4 de Marzo de 1998 9:48 AM
Subject: Re: PIC's USART with MAX232, possible?


>Il 04-Mar-98, Clyde Smith-Stubbs scrisse:
>
>>> I am planning to use a MAX232 to get true RS232 levels on a project I am
>
>> Use a MAX202 - same price, only needs 0.1uF caps instead of
electrolytics.
>
>use MAX233ACPP, no caps at all :-) anyway the price il slightly
> higher :-)
>
>--
>
>   - *Alex* -
>
>  http://freepage.logicom.it/azummo/
>