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MSP430F5529: 16/32/64 SPST switch IC

Tex
Intellectual 280 points
Part Number: MSP430F5529
Other Parts Discussed in Thread: SN74CB3Q16245, SN74CBT16244C

Hi Experts!

i need to pass a single signal coming from my micro controller to 64 pins at a time..

So, I'm looking for a 16ch /32ch /64ch SPST switch IC that switch IC should turn on all channels at once whenever the voltage is given.. not with any protocol..

please share the details if that type of IC is available..

Best regards,

Tex

  • 0
    Guru 39010 points

    Analog? Digital?

  • 0
    TI__Mastermind 18270 points

    Hi Tex,

    I think our multiplexers division is better suited to suggest a device than I am. Most of our SPST ICs will be under MUX. 

    Best,

    Malcolm

  • +1 in reply to Malcolm Lyn
    TI__Genius 14350 points

    Hello Tex,

    So here is a quick list of devices I fit what you are asking for.

    If you are looking for a simple 1;1 switch with >=16channels, I think something like the SN74CBT16244C or  SN74CB3Q16245 are  your best options.

    But please look at the list of device I provided and see which one you would like to use.

    If you need any further assistance let me know!

    Regards,

    Kameron

  • 0 in reply to Kameron Hill
    Intellectual 280 points
    Keith Barkley said:
    Analog? Digital?

    Im looking for the analog switch ICs Keith.. which should turn ON all the channels without any protocol..

    Malcolm Lyn said:
    I think our multiplexers division is better suited to suggest a device than I am. Most of our SPST ICs will be under MUX. 

    Thanks for your suggestion Malcolm Lyn.. as you suggest i'm moving this query to MUX division..

    Kameron Hill said:
    If you are looking for a simple 1;1 switch with >=16channels, I think something like the SN74CBT16244C or  SN74CB3Q16245 are  your best options.

    i little bit confused with this ICs could you please elaborate your IC suggestion on how can I use it without any protocol.. 

    Kameron Hill said:
    So here is a quick list of devices I fit what you are asking for.

    Thanks for sharing, i also parallely try to search an IC which can meet my requirements..

    Thanks and regards,

    Tex

  • +1 in reply to Tex
    TI__Genius 14350 points

    Hello Tex,

    So TI analog multiplexer's signal paths are closed or open depending on the logic sent to the enable pins(OEs) of device.

    For example the  SN74CBT16244C  signal paths are normally closed( meaning signals can be passed when the enable pin is sent a  low signal) For this device any signal lower than 0.8V is recognized as low by the enable pins.

    To turn disconnect  the A pins from the b pins/open the signal paths, You will need to send a high signal to the enable pins of the device. For this device any signal higher than 2V is recognized as a high signal.

    For even better detail on how to control a TI analog multiplexers signal paths look at the device description section on the multiplexer's datasheet.

    Finally checkout this video that explains more about what TI analog multiplexers are and how they work.

    Please let me know if you need any assistance!! 

    Regards,

    kameron

  • 0 in reply to Kameron Hill
    Intellectual 280 points

    Thanks alot for your explanation.. 

    I don't have much knowledge on technical terms used in hardware..

    one last doubt i'm having..

    they have given the below mentioned resistance..

    Should i consider it as contact resistance ? 

    Best regards,

    Tex

  • +1 in reply to Tex
    TI__Genius 14350 points

    Hello Tex,

    Yes this can be thought of as contact resistance( when the switch input and output are electrically connected/switch closed).

    However this is normal in analog switches and is part of the standard operation of the device. The Low ron of this device means that signals put through the device should have little to no signal distortion.

    To learn more about this please checkout this video

    Also to alleviate any concerns on  multiplexer operation please read this document,

    Regards,

    Kameron

  • 0 in reply to Kameron Hill
    Intellectual 280 points

    Thanks for the suggestions.. those helped me alot..

    Thanks and regards,

    Tex