LVTTL to RS-232 adaptor

[[email protected]]

Hello,
I am looking for a LVTTL to RS-232 adaptor.

I found a similar adaptor http://www.hvwtech.com/products_view.asp?ProductID=289

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

 

[[email protected]]

Hello,
I am looking for a LVTTL to RS-232 adaptor.

I found a similar adaptorhttp://www.hvwtech.com/products_view.asp?ProductID=289

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

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:
http://www.maxim-ic.com/products/interface/

Chris

 

[Spehro Pefhany]

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.

No worries, most modern PCs don't have serial ports at all.
Best regards,
Spehro Pefhany

 

[JosephKK]

Yep. The original RS232 "spec" is no longer existent :-(

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.

 

[[email protected]]

This guy has a whole slew of them:http://www.compsys1.com/workbench/On_top_of_the_Bench/Max233_Adapter/...
... if you're being paid for your time, far cheaper than what you could do
yourself.

Thank you very much for your information. Its very helpful.
They do have a board that I was looking for.

Thanks,
Muthu