Hello, I am looking for a LVTTL to RS-232 adaptor.
I found a similar adaptor
But this adoptor does TTL to RS-232. Since I plan to convert the LVTTL output from a Virtex-4 FPGA to RS-232 signal, I need LVTTL to RS-232 adaptor.
Virtex-4 FPGA many I/O standards including LVTTL, LVCMOS,...but not TTL.
Would appreciate your support.
Thank You, Muthu
I'm sure that Maxim makes a chip similar to the MAX232 that will do that conversion for you in LVTTL.
This guy has a whole slew of them:
There's a whole slew of chips from Maxim that will go from 3.3V logic to RS232, for that matter they have chips that will work with anything from 1.8 to 12V supply:
Chris
Even cheaper yet:
That's just a pair of inverters -- they make the argument that most modern PCs work fine off of 0/5V rather than +/-5 (or 12 or...), but personally I'd figure I'd have one of the few PCs left out there that didn't function OK at logic levels. :-)
Yep. The original RS232 "spec" is no longer existent :-(
But I think my original MC1488 would work at lower voltages.
...Jim Thompson
No worries, most modern PCs don't have serial ports at all. Best regards, Spehro Pefhany
Not actually true. EIA/TIA-232 is still alive and well. As is the descendants of RS-422, RS-423, RS-485, and many others. A lot depends on the particular (often not conforming) implementation.
PCs
I meant to say no one follows the original spec.
...Jim Thompson
Thank you very much for your information. Its very helpful. They do have a board that I was looking for.
Thanks, Muthu
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