Need solution regarding half duplex communication

[Murugesh_89]

Hi,
I want to communicate between 90 nodes using the max 485 half duplex communication with the baud rate of 19200. Which IC will be well suited for this either max 485 or max 487.

Can anyone kindly help me regarding this:???:


Thanks,
Murugesh

 

[jjeevan007]

which is microcontroller you are using and what u mean by 90 nodes

 

[Murugesh_89]

Thanks for your help..

Well i am using Pic 18f2520 microcontroller.
I want to have a communication across 90 PCB boards each have one max 485/487 circuitry with the terminals (A/D+, B/D-)