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Thread: Hy-Tronix Myriad/xk 440 IC Tester

  1. #1
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    Default Hy-Tronix Myriad/xk 440 IC Tester

    Hi guys,

    Thought I would post this here in the tools section. I purchased this from a local surplus store. I thought it was an interesting device, have never used one before but it should be able to test most SSI/MSI older logic ICs...

    Has anyone ever come across one before?

    IMG_20200125_130819 (1).jpg

    IMG_20200125_130823 (1).jpg


    edited to mention older SSI/MSI logic ICs. Thanks Chuck!
    Last edited by Cmolson; January 25th, 2020 at 10:26 AM.

  2. #2
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    "Most logic ICs"

    I'd amend that to say "most SSI/MSI older logic ICs". Many PROM programmers have the same functionality, but in actual practice are somewhat limited.

  3. #3
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    Thanks Chuck,

    It did come with a few ICs that I will try out it in. It also came with a reference book of equivalent ICs from 1983.

    Some of the sample chips it came with:

    MC74BC00P
    MC74BC08P
    MC74BC32P
    MC74ACT74N
    MC74ACT245N
    SN7490AJ
    74AC00
    74AC244
    QB 8345
    RM747DC
    74AC241

    IMG_20200125_132819.jpg

  4. #4
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    Don't know what a QB8345 is. Are you sure that isn't a date code?

    The chips above are either simple combinatorial logic or simple counters flip-flops latches and drivers. Try some really complex logic, say, a 74AS881.

    Still, they can be useful if you have a pile of house-numbered TTL that you're trying to identify.

  5. #5
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    You are correct, I wrote the wrong number down as I hadn't seen either number before.

    QB8345, the actual part number seems to be 9007DM

    I don't have many logic ICs, just standard stuff (or, nor, and, flip flops etc).

    I tested a few of the ones it came with along with the self-test and it appears to be working.

    IMG_20200125_161515.jpg
    Last edited by Cmolson; January 25th, 2020 at 01:20 PM.

  6. #6
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    9007 = old Fairchild TTL logic family. 8-input NAND, but pinout somewhat different from 7430.

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