Max232 or MAx3232

[Joseph Goldburg]

Hi All,

Whats the diff?

thanks in advance.

Joseph

 

[Paul Burke]

Joseph Goldburg wrote:

Whats the diff?

That bulbous bit on the back axle of your car.

But a MAX232 is 5V, MAX3232 3V (ish).

Paul Burke

 

[Anders F]

"Paul Burke" <paul@scazon.com> wrote in message
news:2vbr3jF2gu6a2U1@uni-berlin.de...

Joseph Goldburg wrote:

Whats the diff?


That bulbous bit on the back axle of your car.

LOL. But that's abbreviation too...

But a MAX232 is 5V, MAX3232 3V (ish).

Haven't used RS232 for ages. But check the supply ranges, package/pin out
and cap requirements....

/A

Paul Burke

 

[John Larkin]

On Tue, 9 Nov 2004 23:02:20 +1100, "Joseph Goldburg"
<wizard1@SPAMnetspace.net.au> wrote:

Hi All,

Whats the diff?

thanks in advance.

Joseph

Both are expensive. If you have +-12 supplies, use a cheap level
shifter.

John

 

[Nico Coesel]

Paul Burke <paul@scazon.com> wrote:

Joseph Goldburg wrote:

Whats the diff?


That bulbous bit on the back axle of your car.

But a MAX232 is 5V, MAX3232 3V (ish).

And be sure to never ever ever E V E R get the cheap Sipex version (of
any chip) or you'll be very sorry.

--
Reply to nico@nctdevpuntnl (punt=.)
Bedrijven en winkels vindt U op www.adresboekje.nl

 

[Rich Webb]

On Tue, 09 Nov 2004 20:04:45 GMT, nico@puntnl.niks (Nico Coesel) wrote:

Paul Burke <paul@scazon.com> wrote:

Joseph Goldburg wrote:

Whats the diff?


That bulbous bit on the back axle of your car.

But a MAX232 is 5V, MAX3232 3V (ish).

And be sure to never ever ever E V E R get the cheap Sipex version (of
any chip) or you'll be very sorry.

Why? I've used them in some admittedly not very demanding lab setups
and have not experienced any problems with them. I have NOT done A-B
comparisons with the Maxim parts nor scrutinized the waveforms but
they've worked OK for me up to 155 kBaud.

--
Rich Webb Norfolk, VA

 

[Ken Smith]

In article <trr2p0pqi3lod6upoqhcckhsl1qt1hsh0h@4ax.com>,
Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> wrote:
[...]

I had a MAX3232-equivalent quit on me in a lab environment (hot
plugging, but that's normal on RS-232). Actually, IIRC, it was the ST
version of that chip.

I've seen the MAX232 smoke under a hot plugging situation. It happened
often enough that we added resistors to the input and output lines. We
gave up a little drive but the chips failed a lot less. The transmitter
only seemed to need 100 ohms to keep it alive.

--
--
kensmith@rahul.net forging knowledge

 

[Ken Smith]

In article <0kv1p0dtkpbgf7n8osr32gig4dgc6v7a8c@4ax.com>,
John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote:

On Tue, 9 Nov 2004 23:02:20 +1100, "Joseph Goldburg"
wizard1@SPAMnetspace.net.au> wrote:

Hi All,

Whats the diff?

thanks in advance.

Joseph


Both are expensive. If you have +-12 supplies, use a cheap level
shifter.

Yes, use the other 2 sections of that LM324 :>


BTW: I have to admit I really did use an LM324 as the RS232 buffer once.
We were counting chips.

--
--
kensmith@rahul.net forging knowledge

 

[Rich Grise]

On Wed, 10 Nov 2004 02:46:38 +0000, Ken Smith wrote:

In article <0kv1p0dtkpbgf7n8osr32gig4dgc6v7a8c@4ax.com>,
John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote:
On Tue, 9 Nov 2004 23:02:20 +1100, "Joseph Goldburg"
wizard1@SPAMnetspace.net.au> wrote:

Hi All,

Whats the diff?

thanks in advance.

Joseph


Both are expensive. If you have +-12 supplies, use a cheap level
shifter.

Yes, use the other 2 sections of that LM324 :


BTW: I have to admit I really did use an LM324 as the RS232 buffer once.
We were counting chips.

What kind of bitrate did you get, if you don't mind my asking?

Thanks,
Rich

 

[John Larkin]

On Wed, 10 Nov 2004 02:46:38 +0000 (UTC), kensmith@green.rahul.net
(Ken Smith) wrote:

In article <0kv1p0dtkpbgf7n8osr32gig4dgc6v7a8c@4ax.com>,
John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote:
On Tue, 9 Nov 2004 23:02:20 +1100, "Joseph Goldburg"
wizard1@SPAMnetspace.net.au> wrote:

Hi All,

Whats the diff?

thanks in advance.

Joseph


Both are expensive. If you have +-12 supplies, use a cheap level
shifter.

Yes, use the other 2 sections of that LM324 :

SN75155. $0.66 in small qty, SO-8.

Don't use a 324 as a comparator. When one section switches, it
glitches the others... shared current sources or something.

John

 

[Steve Sousa]

John Larkin <jjlarkin@highSNIPlandTHIStechPLEASEnology.com> wrote in message news:<0kv1p0dtkpbgf7n8osr32gig4dgc6v7a8c@4ax.com>...

On Tue, 9 Nov 2004 23:02:20 +1100, "Joseph Goldburg"
wizard1@SPAMnetspace.net.au> wrote:

Both are expensive. If you have +-12 supplies, use a cheap level
shifter.

What are the modern equivalents for the mc1488/9 ?, i couldn't find
anything that was 12 volts out, just the 5v compatible or compliant
ones...

Thanks

Steve Sousa