by "starfire" <starfire151@[EMAIL PROTECTED]
>
Dec 30, 2007 at 12:07 PM
"TT_Man" <Someone@[EMAIL PROTECTED]
> wrote in message
news:SyQdj.20606$ou3.6218@[EMAIL PROTECTED]
> SNIP
>>>
>>> Geo
>>
>> Thanks for the response. I'll check into the "bray terminal".
>>
>> Yes... I have a simple three-wire interface with a ICL3232 (MAX232
>> clone). I'm running the whole system on two AA cells (about 3.2VDC with
a
>> multimeter).
>>
>> I have been trapping the log from the HyperTerminal session to a text
>> file that I examine in hex after the fact. The characters (when I see
>> them) don't look anything like what was sent.
>>
>> Dave
>>
>>
> Normal Max232's won't run reliably at 3.3 V, as I found out recently. 2
> solutions- use a 2N7000 pulled to RST and set RST true ( works fine for
> me) or use a true 3.3 v compatible mrs232 chip......
>
The Intersil ICL3232 is rated to run from 3.0VDC to 5.5VDC, it only draws
1uA quiescent current, and it takes 0.1uF caps.
I've never had a problem. Good chip.
Dave