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LVDS to 18bit CMOS RGB converter IC

PRAHLAD Supeda
Expert 5475 points
Other Parts Discussed in Thread: DS90CF564
Hi,
One of my customer is using SN65LVDS94DGG - LVDS to 18bit RGB converter IC. 
Does this IC support CMOS RGB?
If not then please suggest IC that is capable of LVDS to 18Bit CMOS RGB conversion.

Regards,
Prahlad
  • 0
    TI__Mastermind 29655 points
    Hi Prahlad,

    The majority of our devices operate with a 3.3-V power supply and use LVCMOS technology. I suggest implementing with a simple voltage translator device to convert from 3.3-V to 5-V. The purpose for using 3.3-V logic is for reduction of power consumption and lower EMI radiation.

    In our portfolio, there is one legacy deserializer device that converts LVDS to 21-bit RGB with the parallel interface operating at 5-V CMOS. This can still be used with 18-bit RGB, with the upper-most differential pair (RxIN3) left unconnected. Please suggest the DS90CF564 if your customer insists on a converter IC solution that operates with a 5-V CMOS parallel interface.

    Thanks,

    Michael
  • 0 in reply to Michael Lu (Santa Clara)
    Prodigy 40 points

    Dear sir,

    Thanks for your reply.

    I have checked the Datasheet of the specified part-DS90CF564 ,but the datasheet indicates it will generate TTL output,not the CMOS output.but we need CMOS output.

    So please clarify....

  • 0 in reply to ARIJIT PODDAR
    TI__Mastermind 29655 points

    Hi Arijit,

    Perhaps a better way to determine compatibility is to look at whether the minimum high level output voltage (VOH) and maximum low level output voltage (VOL) defined in p. 2 of the DS90CF564 datasheet will match the minimum high level input voltage (VIH) and maximum low level input voltage (VIL) requirements of the device following this bridge IC. If the VOH and VOL levels match your VIH and VIL system requirements, then the DS90CF564 should work.

    The output levels from the DS90CF564 are compatible to meet the input logic level requirements for either a device operating with CMOS or TTL:

    Thanks,

    Michael