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RS-485 2:1 transceiver

Muni Pavan Kumar Reddy Kona
Prodigy 225 points
Other Parts Discussed in Thread: SN65HVD78, THVD1450, SN65C1167E

Hello,

I am looking for 2:1 RS-485 receiver.

In my application there are two RS-485 Differential inputs. I need to select any one using IO/SELECT pin.

Does TI has any single IC which has 2 transceivers inside same package.

SN65HVD78 looks to good solution for but but it has only one transceiver? 

Appreciate any help.

Thanks,

muni

  • 0
    TI__Guru 62910 points

    Hi Muni,

    Something like SN65HVD78 would work if you used two of them and then controlled the enable lines accordingly.  (For example, if you wanted to connect both "R" pins to a single MCU input you could switch between channels by first disabling the active channel by pulling its /RE line high and then enable the new channel by pulling its /RE line low.)  If you wanted to go this route, I'd recommend THVD1450 over SN65HVD78 since it is a newer device with some performance improvements over the older version.

    There are also some devices that integrate two transceivers into a single package.  For example, you may want to consider SN65C1167E.

    Regards,
    Max