Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!stout!cook
From: cook@stout.ucar.edu (Forrest Cook)
Newsgroups: sci.electronics
Subject: Re: MAX-232 chip info wanted
Keywords: MAX-232 RS-232 interface data
Message-ID: <1419@ncar.ucar.edu>
Date: 15 Feb 89 20:36:32 GMT
References: <939@calvin.EE.CORNELL.EDU> <464@limbic.UUCP>
Sender: news@ncar.ucar.edu
Reply-To: cook@stout.UCAR.EDU (Forrest Cook)
Distribution: sci
Organization: Field Observing Facility, NCAR, Boulder, CO
Lines: 20

In article <464@limbic.UUCP> gil@limbic.UUCP (Gil Kloepfer Jr.) writes:
>In article <939@calvin.EE.CORNELL.EDU> phil@calvin.EE.CORNELL.EDU (Phil Erickson) writes:
>>I've seen numerous references to the MAX-232 chip for TTL/RS232 conversion;
...
>The chip supports two RS232 transmitters and two receivers.  This makes
>for a nice port which could handle, say, receive/send data, DSR, and RTS.

I highly recommend this chip as a cost saver.  It eliminates the need for an
extra +-10V supply if all you need is RS-232.  This may be pushing the specs
a bit, but we have used the MAX-232 to provide power to a CMOS analog
mux (DG-509) that is used for selecting on of four RS-232 lines.
The mux chip does not draw much current and we are only using one of the
two transmitter sections from the MAX-232.
We have built about 5 of these boxes and they have worked without problems
for over a year.

 ^	Forrest Cook   (The preceding comments were my Opinions)	 ^
/|\	cook@stout.ucar.edu						/|\
/|\	{husc6 | rutgers | ames | gatech}!ncar!stout!cook		/|\
/|\	{uunet | ucbvax | allegra | cbosgd}!nbires!ncar!stout!cook	/|\