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GD65232: About power consumption

Roy Hsu
Genius 9320 points
Part Number: GD65232
Other Parts Discussed in Thread: TRS213, TRS3243,

Hi Team,

What do "All inputs at 1.9V" and "No load" in the table below stand for? And how do they relate to power consumption? 

Besides, which part do you recommend the replace this one as it's really old?

Thanks!

Roy Hsu

  • 0
    TI__Guru 62920 points
    Hi Roy,

    "Inputs" here refer to the inputs to the driver. A level of 1.9 V or greater at this input causes the driver output to be low (pulled towards VSS) and a level of 0.8 V or less causes the driver output to be high (pulled towards VDD). "No load" means that the driver is not connected to any load that might pull additional current from it (such as a pull-down resistance or another RS-232 receiver input).

    It's rare for newer parts to have the higher-voltage VDD/VSS rails, since it is often inconvenient to generate these in a system. Most newer transceivers have charge pump circuits that generate the high-voltage bipolar rails required for RS-232 from a lower-voltage VCC (like 5 V or 3.3 V). An example of a newer, charge-pump-based transceivers with three driver channels and five receiver channels would be TRS3243 or TRS213.

    Regards,
    Max
  • 0 in reply to Miguel Robertson
    TI__Genius 9320 points

    Hi Max,

    Would you suggest my customer to move to the two products you suggested? Or is it also fine to keep using GD65232?

    Thanks!

    Roy Hsu

  • 0 in reply to Roy Hsu
    TI__Guru 62920 points
    Roy,

    Either path is OK. The newer parts generally have some advantages like not requiring high-voltage rails, support for higher data rates, smaller package options, improved ESD, support for low-power modes, etc. If these are not a big benefit to your customer's application, though, there is no issue in continuing to use the older devices. (We currently do not have any end-of-life plans for this part.)

    Max
  • 0 in reply to Miguel Robertson
    TI__Genius 9320 points

    Hi Max.

    Thanks for the feedback. Very detailed and clear!

    Roy Hsu