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Question about DS90LV011A & DS90LT012A.

Satoshi
Guru 19485 points
Other Parts Discussed in Thread: DS90LV011A, DS90LT012A, SN65LVDS32, SN65LVDS31, DS90LV012A

Please let me know about DS90LV011A & DS90LT012A.

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・Please see below : about Driver～Receiver connection (2 type), is it no ploblem? 　

　　・DS90LV011A (Driver) ⇒ SN65LVDS32 (Receiver) 　

　　・SN65LVDS31 (Driver) ⇒ DS90LT012A (Receiver)

・If use LVDM I/F driver, can DS90LT012A connect Multi-Drop?

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Best regards,

Satoshi

  • 0
    Guru 19485 points

    How is the situation?

  • 0
    TI__Mastermind 29635 points

    Hi Satoshi-san,

    DS90LV011A (Tx) => SN65LVDS32 (Rx)

    These two devices are spec'd for different maximum data rates, so I think you can use this pair for operation as long as you do not exceed 100 Mbps. The DS90LV011A is spec'd for optimal operation between 400-500 Mbps, while the SN65LVDS32 is spec'd to operate at no more than 100 Mbps.

    SN65LVDS31 (Tx) => DS90LT012A (Rx)

    This should be fine. Both driver and receiver are spec'd for operation up to ~400 Mbps and conform to the TIA/EIA-644 standard.

    For a multidrop configuration, I would recommend the DS90LV012A, because in multi-drop, you will only require a 100-Ohm termination resistor across the final LVDS receiver input pair. The DS90LT012A comes with the receiver integrated. This is beneficial for saving space in point-to-point applications, but does not provide flexibility of using an external termination resistor for multidrop configurations.

    Thanks,

    Michael