Path: utzoo!utgpu!watmath!clyde!att!icus!limbic!gil
From: gil@limbic.UUCP (Gil Kloepfer Jr.)
Newsgroups: sci.electronics
Subject: Re: MAX-232 chip info wanted
Summary: Jameco has it .. neat chip
Keywords: MAX-232 RS-232 interface data
Message-ID: <464@limbic.UUCP>
Date: 15 Feb 89 03:52:01 GMT
References: <939@calvin.EE.CORNELL.EDU>
Reply-To: gil@limbic.UUCP (Gil Kloepfer Jr.)
Distribution: sci
Organization: ICUS Software Systems, Islip, NY
Lines: 30

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;
>who makes this IC (i.e. part number so I can find it in a databook) and 
>what's a reasonable price?  
>Phil Erickson   
>         Space Plasma Physics   Upson Hall Cornell University  Ithaca, NY 14850
>ARPA: phil@calvin.ee.cornell.edu

I got my MAX232 chip from Jameco Electronics, 1355 Shoreway Rd, Belmont,
CA 94002, tel (415) 592-8097.  Jameco is an excellent outfit and has
been around for a long time, I recommend them highly as a satisfied
customer.  The chip costs $4.95.  Jameco sometimes is a little more
expensive than other outfits, but their stock is good and their customer
service is outstanding.  Jameco will also send you the spec sheet you
desire for an extra 50 cents.

According to the specs I have, the chip is made by Maxim.  It requires
two 10uF and two 4.7uF electrolytics to operate.  They recommend an
extra 10uF electrolytic be used from Vcc to GND as close to the chip
as possible to prevent various sundries from making their way up the
power supply lines.

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.

--------
Gil Kloepfer, Jr.          U-Net: {decuac,boulder,talcott,sbcs}!icus!limbic!gil
ICUS Software Systems      Voice: (516) 968-6860 [H]   (516) 746-2350 x219 [W]
P.O. Box 1                 Internet:  gil@icus.islp.ny.us
Islip Terrace, NY  11752   "Life's a ...  well, you know..."