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Alternative Op Amp for part: V192 4AK G4 CQR6

Harleen Singh
Prodigy 40 points
Other Parts Discussed in Thread: SN75ALS192, AM26C31

I am looking for an alternative Op Amp for a model of TI Op-Amp that I cannot seem to find anywhere on the website nor through customer support. It has part number "V192 4AK G4 CQR6". I need a replacement that is equivalent to this part, but since I cannot locate the part on the internet, I cannot determine what would be a viable replacement. The part is a 16 pos part. Please let me know if anyone has any insight and may be familiar with the part and its properties so I can determine a viable replacement. 

  • 0
    TI__Guru 71536 points

    Hello Harleen,

      Please post a picture of the device.  This might be useful in determining the device.

    Thank you,

    ~Leonard  

     

  • 0
    Prodigy 40 points

    Here is a photo of the part on the board:

  • 0 in reply to Harleen Singh
    TI__Guru 71536 points

    Thanks Harleen,

      So far, coming up empty.  It may be a custom device, I'll need to do more research to find out.

    Also, wondering if you can get a schematic of the board?  

    ~Leonard  

  • 0 in reply to LeonardEllis
    Prodigy 40 points

    Thank you Leonard for your insight. It is certainly possible that this part is custom. It is part of a single-ended to differential converter PCB in a cable from a company called Harmonic Drive. Unfortuntely, they are unwilling to provide me with the schematic for this PCB so I was hoping to find the part in this forum so I could track it down and replace it without having to buy a whole new cable (they are quite expensive). So, I cannot provide you with a schematic unfortunately, but I believe it is some sort of buffer or op amp. I am not sure if it would be helpful, but here is the link for the cable manual: https://www.harmonicdrive.net/_hd/content/documents1/RSFsupermini.pdf

    To make the manual search easier, it is the cable under this name: EWA-E××-JST09-3M14 (it is an encoder cable)

    It is designed for the single-ended RSF-5B supermini actuator from Harmonic Drive, and the motors and cables are produced and manufactured in Japan.

    I hope the information I provided may be helpful in tracking down the part. Please let me know if there is any other information I can provide you with that may be helpful to you. I have also reached out to a sales engineer from this company in the hopes that he could provide me with the part specs, but I am unsure as of now if he will be able to give me that information.

    Thank you again!

  • 0 in reply to Harleen Singh
    TI__Guru*** 145246 points

    Harleen,

    This should be SN75ALS192PW and the connector would be logic input (and a short cable) as I see traces to IC pin 1 and 7. I also see pin 8 ground and pin 16 is probably power. So that is consistent with SN75ALS192PW.  At this time, there is no PW package option on the SN75ALS192 product page.

  • 0 in reply to Ron Michallick
    Prodigy 40 points

    Hi Ronald,

    Thank you very much for your insight! Are you familiar with a part that is equivalent to the one you listed? Or is that model the only one of its kind that would work in this application that is available for purchase?

    Thank you again!

    Harleen

  • 0 in reply to Harleen Singh
    TI__Guru*** 145246 points

    Harleen,

    The first step would be to check the pin voltages / waveforms to determine if the devices appear to work correctly or not. The SN75ALS192 data sheet shows what this simple to understand device does. 

    I suspect there are 3rd party old stock suppliers that may have inventory in case you want to replace the device with probable same replacement device. 

    The AM26C31 looks promising and it is the same pinout, package, and power supply voltage. This should work. I'll transfer this post to see if the product owners have any further advice.