Eirc

I use 75176 ( national / texas ) and it works great. Maxim chips have better fea
tures
but availablity and costs are prohibitive in India.

Pailoor

Eric Oliver wrote:

> Ravi,
>
> I was just researching RS485 chips.  What chip do you recommend ?
>
> Eric
>
> On Monday, July 26, 1999 7:41 AM, Ravi Pailoor [SMTP:chiptech@VSNL.COM] wrote:
> > My application is as follows.
> >
> > I have 70 modules each having RS232 and RS485 drivers, 16C63, DAC 1220,  AD7
705
> > and 24LC08. The modules control the current fed to a electro plating rectifi
er in
> > 7 banks of 10 each.  The settable current is from 1 Amp to 50 Amps. The non
> > linearity of the rectifier responce is taken care by calibration and the val
ues
> > are stores in the SEEPROM.
> >
> > These 70 modules spread over 100 meters are connected to a master controller
> > based on Z80 which in turn is connected to a PLC.
> >
> > The PLC sends group commands to the Z80 system and the Z80 in turn sends and
> > receives data to and from the 70 modules.
> > It is working well in the noisy field environment.
> >
> > Now this module has become a building block for various industrial applicati
ons.
> >

--
Website : http://business.vsnl.com/chiptech


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