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GD75232: Evaluation Module

Silvia Gao
Prodigy 170 points
Part Number: GD75232
Other Parts Discussed in Thread: GD65232, SN75C185, TIDA-00557, TRS3243E

Hi Team,

I would like to apply for the EVM of GD75232 for customer, but I cannot find it in ti.com.

Is there the Evaluation Module designed for GD75232? If so, where should I apply?

  • +1
    Guru 280050 points

    There is no EVM. See figure 16 (and figure 10 for the capacitor values; typically 330 pF to stay below the RS-232 limit of 30 V/µs).

  • +1
    TI__Mastermind 46687 points

    Hi Silvia,

    There is no EVM for this device. 

    Is there a reason that your customer is interested in such an old RS-232 device ? Our newer transceivers are generally much better and easier to design with - also they don't need multiple  voltage sources to operate (this device requires 3 with power sequencing requirements).

    Please let me know!

    Best,

    Parker Dodson

  • 0 in reply to Parker Dodson
    TI__Prodigy 170 points

    Hi Parker,

    Thanks for your suggestion.

    Can you recommend some newer transceivers which have EVM and similar functions to GD75232? It is even better if they are pin-to-pin compatible with GD75232.

    Thank you very much!

    Best regards,

    Silvia Gao

  • 0 in reply to Silvia Gao
    TI__Mastermind 46687 points

    Hi Silvia,

    What is needed by customer? 

    Voltage supply, RS-232 bus voltage level, and  controller voltage? 

    Do they know how long their bus will be?

    We really only the 2 GDx5232 devices (GD75232 and GD65232) - so there isn't really a direct match. However we do have devices that match configuration (not pin-out - as this device has more sources required than the vast majority of our devices) and similar data rate - but I want to ensure that we can meet the needs of the application. 

    Best,

    Parker Dodson

  • 0 in reply to Silvia Gao
    Guru 280050 points

    There are very few RS-232 transceivers that use existing ±12 V supplies (the GD75232 is cheap and robust, the SN75C185 is low power). None of them have an EVM.

    There are many RS-232 transceivers that have integrated charge pumps to generate the RS-232 bus voltages from a single 5 V or 3.3 V supply. None of them have an EVM either. The TRS3243E has reference designs such as TIDA-00557, but this does not help you.

    You could put the GD75232N into a breadboard. (The datasheet circuit is simple enough, and there are no high-frequency problems.)

  • 0 in reply to Clemens Ladisch
    TI__Prodigy 170 points

    Hi Clemens and Parker,

    Thanks for your answers.

    The customers still want to design with GD75232 because they have used it before. 

    If the customers encounter problems during the design process, hope you can provide support and help us. 

    Thanks again.

    Best,

    Silvia Gao