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Asking for the alt. solution to replace NJU7291RB1-03-T?

SHH
Mastermind 31226 points
Other Parts Discussed in Thread: TPS3852, TPS3851, TPS3850

Hi Team,
Could you please recommend the alt. solution to replace NJU7291RB1-03-T(TE1)?

Thanks,
SHH

NJU7291_J.pdf

  • 0
    TI__Guru 71526 points

    Using CROSS REFERENCE link on TI.com shows:

    NJU7291RB1-03 Real Time Clock, CMOS, PDSO8 Timers or RTCs

    We'll get the clocks team to further refine; did you already look in the CLOCKS products for a comparison?

    ~Leonard

  • 0 in reply to LeonardEllis
    TI__Mastermind 31226 points

    Hi Leonard,
    Who can help for this request? Customer would like to know the similar function chip option to replace.

    Thanks,
    SHH

  • 0 in reply to SHH
    TI__Mastermind 31226 points

    Hi Leonard,

    I saw the block diagram. It looks like a reset IC. If it is reset IC, Could you recommend the proper solution for replacing this one?

    Thanks,

    SHH

  • 0 in reply to SHH
    TI__Guru 71526 points

    Yes, that helps, as there were several devices in that family. Here are the basic characteristics:

    Features
    • Supply voltage range (V+=2.5V to 7.0V)
    • RESET voltage (VRL=±1.0%)
    • RESET voltage is adjustable with external resister
    • Output delay hold time and watchdog timer RESET time setting ratio=30:1
    • Independently configurable watchdog timer monitor time
    • Independently configurable stopping watchdog timer function

    Give me a bit to get the right team involved.

    ~Leonard

  • 0 in reply to LeonardEllis
    TI__Genius 12630 points

    All,

    Thank you for providing the desired features as this makes it easier for us to find the correct device. Please see TPS385x family (TPS3850, TPS3851, TPS3852). The subtle differences between these devices are programmable reset delay vs fixed reset delay and window watchdog vs regular watchdog. Please take a look and let me know what you think. Thanks!

    -Michael