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SN65LVDS1: 80MHz LVDS

5t34m
Intellectual 1175 points
Part Number: SN65LVDS1
Other Parts Discussed in Thread: SN65LVDS31, SN65LVDS33, DS90LV048A, DS90LV028A, DS90LV011A, DS90LV047A, DS90LV027A

Hi,

we want to communicate between two MCUs with SPI with up to 80MHz.

Idea is to use LVDS since need to connect 2 seperate PCBs

Which LVDS part would you recommend?

3Tx, 1Rx on 3V3 supply.

Thanks

  • 0
    TI__Genius 12866 points

    Hi,

    What is the distance between the two PCB?

    To run SPI up to 80MHz with LVDS, very likely you need to consider round trip timing delay issue. Please email me at y-cai@ti.com. I could share an upcoming TI Design guide on SPI over LVDS. 

    If wide common mode input range is needed, we would suggest SN65LVDS31/SN65LVDS33 4 channel LVDS TX/RX

    If not, any combination of DS90LV047A/DS90LV048A (4 channel), DS90LV027A/DS90LV028A(2 channel), and DS90LV011A/12A (1 channel) can be use. 

    Best Regards,

    Charley Cai