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Part for Single ended 1.8V CMOS to 3.3V LVDS transceiver

Nanjunda M
Expert 2485 points
Other Parts Discussed in Thread: SN65LVDM31, SN65LVDS4

Hi ,

I'm looking for a 1.8V CMOS to 3.3V LVDS transceiver or driver and receiver parts with multiple channels in single package.

I have speed requirement to be more than 1Mbps.

Please let me know if anyone has used.

Thanks in advance.

Regards,

Nanjunda M

  • 0
    TI__Genius 16150 points
    Hi Nanjunda,

    Your question has been assigned to the appropriate applications engineer. ASAP we will be back with the answer.

    Thanks,
    Luis Omar Moran
    High Speed Interface
    SWAT Team
  • 0 in reply to Luis Omar Moran
    Expert 2485 points

    Hi Luis,

    Thanks for the reply.

    I found a receiver part SN65LVDS4RSER which meets my requirements at a point.

    But yet I could not find any driver or Transceiver part for the above requirement.

    Please let me know ASAP if there is a part which might meet my requirements.

    Thanks & Regards,

    Nanjunda M

    SN65LVDS4RSER
  • 0 in reply to Nanjunda M
    TI__Intellectual 1810 points
    Hi Nanjunda,

    I've not yet found a driver that you're interested in. Would you be OK with an option of using a 1.8V-to-3.3V level translator (e.g. SN74LV4T124 - www.ti.com/.../sn74lv4t125.pdf) with a 3.3V LVCMOS-to-LVDS driver (e.g. SN65LVDM31 - www.ti.com/.../sn65lvdm31.pdf) ?

    Best regards,

    Hassan.
  • 0 in reply to HA
    Expert 2485 points
    Hi Hassan,

    Thanks for the above suggestion, I'll go ahead with this combination.

    Got some doubt on my selection of receiver SN65LVDS4RSET while going through it once again.

    Is this part is recommended for 3.3V LVDS input and 1.8V single ended output?

    I got this doubt, as the Receiver specifications are not provided for VCC 3.3V signal but there is an option for VDD 1.8V.

    Also, w.r.t. 'Figure 22. Receiver Equivalent Input and Output Schematic Diagrams', this seemed difficult.

    Can you please help me understand this.



    Thanks & Regards,
    Nanjunda M
  • 0 in reply to Nanjunda M
    TI__Intellectual 1810 points

    Hi Nanjunda,

    Yes, SN65LVDS4 LVDS receiver is compatible with the LVDS standard. The LVDS input is actually differential, so no problem as long as it was driven from an LVDS-compliant driver. The VCC supply voltage can be either 1.8V or 2.5V. Obviously, the power consumption will be higher with the 2.5V VCC than with 1.8V VCC. Please checkout the datasheet to see other parameters that change with VCC.

    The single-ended output can be at 3.3V, 2.5V, or 1.8V levels based on the VDD voltage. So, if you're interested in 1.8V single-ended output, you should use VDD = 1.8V.

    Please let me know if you have further questions,

    Best regards,

    Hassan.