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MAX232CPE & MAX232N - I don't understand the difference?

lcdpublishing All Messages By This Member #28101 Hi Guys, I have a number of MAX232 chips on hand. Some are marked MAX232cpe and some are marked MAX232n. I tried to gather up what the differences are from the datasheet, but all that did was confuse me more. My primary concern is if they both get wired up the same, I am not too worried about if they are "industrial" or "medical" grade etc. If anyone knows the differences, I sure would appreciate the info! THanks again! Chris
Leon Heller #28104 toggle quoted message Show quoted text ----- Original Message ----- From: "lcdpublishing" <lcdpublishing@...> To: <Electronics_101@...> Sent: Monday, May 01, 2006 3:40 PM Subject: [Electronics_101] MAX232CPE & MAX232N - I don't understand the difference? Hi Guys, I have a number of MAX232 chips on hand. Some are marked MAX232cpe and some are marked MAX232n. I tried to gather up what the differences are from the datasheet, but all that did was confuse me more. My primary concern is if they both get wired up the same, I am not too worried about if they are "industrial" or "medical" grade etc. If anyone knows the differences, I sure would appreciate the info! CPE means DIP for Maxim chips, if the N ones are DIP they are probably (very) old stock. I always use MAX202 for 5 V systems, they use 100 nF capacitors which makes things much easier. Leon --- [This E-mail has been scanned for viruses but it is your responsibility to maintain up to date anti virus software on the device that you are currently using to read this email. ]
Stefan Trethan #28106 most often this suffix is the package and temperature range. As long as it fits it should be fine. But beware, there were -R versions of ICs that were mirrored upside down! Ideally check the datasheet, but different manufacturers may use different suffixes. CPE should be consumer temp range, and plastic DIP, i think, for maxim. ST toggle quoted message Show quoted text On Mon, 01 May 2006 16:40:15 +0200, lcdpublishing <lcdpublishing@...> wrote: Hi Guys, I have a number of MAX232 chips on hand. Some are marked MAX232cpe and some are marked MAX232n. I tried to gather up what the differences are from the datasheet, but all that did was confuse me more. My primary concern is if they both get wired up the same, I am not too worried about if they are "industrial" or "medical" grade etc. If anyone knows the differences, I sure would appreciate the info! THanks again! Chris
lcdpublishing All Messages By This Member #28107 Thanks guys, I will double check the data sheet again to see if I can "Get it". If not, I guess the next best thing is to drop it in a socket and give it a try. I have a working module setup right now with a cpe part, so swaping the chip for a test is pretty easy. I just didn't want to let the smoke out if there was more to this part number suffix. CHris
rtstofer All Messages By This Member #28110 --- In Electronics_101@..., "lcdpublishing" <lcdpublishing@...> wrote: Thanks guys, I will double check the data sheet again to see if I can "Get it". If not, I guess the next best thing is to drop it in a socket and give it a try. I have a working module setup right now with a cpe part, so swaping the chip for a test is pretty easy. I just didn't want to let the smoke out if there was more to this part number suffix. CHris Looks to me like the MAX232N is a Texas Instruments part while the MAX232CPE is a Maxim part. At least that't the way I found the datasheets. No matter, both use 1.0 ufd capacitors. Too bad, the MAX232A uses 0.1 ufd which are much smaller. I prefer the MAX233 because it doesn't require any charge pump capacitors. It still requires a decoupling capacitor. Richard
lcdpublishing All Messages By This Member #28113 THanks Richard, I am 95% sure I got the 232N parts when I ordered the 232cpe parts from Jameco and they shipped the 232N instead. I don't mind substitutes, as long as I understand what it is being done to me :-) CHris Looks to me like the MAX232N is a Texas Instruments part while the MAX232CPE is a Maxim part. At least that't the way I found the datasheets. No matter, both use 1.0 ufd capacitors. Too bad, the MAX232A uses 0.1 ufd which are much smaller. I prefer the MAX233 because it doesn't require any charge pump capacitors. It still requires a decoupling capacitor. Richard

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