3 Jun
2009
3 Jun
'09
11:11 a.m.
On Wednesday 03 June 2009, Chuck Guzis wrote:
On 3 Jun 2009 at 12:10, Dave McGuire wrote:
I've used the MAX 3233E recently, and it seemed to do what I wanted
(allow me to hook a serial console up to a device with a 3.3V port),
and I've used the 5V version (3235) before as well.
It's nice having a 1-chip design for an RS-232 level converter.
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
The MAX232, if memory serves, is specced at
10V but usually tops
out at 8-9V in my experience. I sure do love those chips. :)
I get about +/-10 out of the MAX232Ns from TI, but I use 10 uF/25v
caps instead of 1uF on them (just have more of them in my hellbox).
There are also the cap-less models from Maxim (can't recall the part
numbers) that are pretty tempting.
Some modern equipment gives you +5/0 for "RS232" levels. My DTV set-
top-box with a DE9 on the rear panel labeld "RS232" is such an
example.
Although, I suppose we're going to have to start calling it "TIA-
232".