RS485 tranceivers?

[Anders F]

I can't quite find out why the RS485 tranceivers usually's only spec'ed for
a very limited range. I'd like a 3-5.5V type (1/8 load and slewrate
limited). Why would that be so hard to design/manufacture?

Cheers,
Anders

 

[valentin tihomirov]

most logic has this range.

 

[Anders F]

"valentin tihomirov" <spam@abelectron.com> wrote in message
news:34tj0rF4fb0efU1@individual.net...

most logic has this range.

Yep - then why wouldn't they make tranceivers this range too? I mean the
differential drivers can be made as 3.3V and 5V...

/A

 

[valentin tihomirov]

Yep - then why wouldn't they make tranceivers this range too? I mean the
differential drivers can be made as 3.3V and 5V...

Actually, most rs422/485 drivers use these logic levels.

 

[Anders F]

"valentin tihomirov" <spam@abelectron.com> wrote in message
news:34u2hgF4esemlU1@individual.net...

Yep - then why wouldn't they make tranceivers this range too? I mean the
differential drivers can be made as 3.3V and 5V...

Actually, most rs422/485 drivers use these logic levels.

Yeah - but they're either specified for 3.3V OR 5V (it's the supply I'm
referring to). I'm wondering why the device I need (3-5V supply range) does
not exsist....

/A