• State
  • Locked Locked
  • Replies 4 replies
  • Subscribers 18 subscribers
  • Views 584 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Schmitt Trigger CD40106B date code difference 0444 (2004) and 0319(2003)

Dhaval Mehta6
Prodigy 20 points
Other Parts Discussed in Thread: CD40106B

Hello,

We are using Schmitt Trigger CD40106B in our product to interface a water level sensor. As a part of functional test the sensor input is shorted and the signal timing is measured. This signal passes through 3 stages of schmitt trigger. 

We have encountered a problem during production testing.The ICs with date code 0444 (2004 date code) passed the test whereas ICs with date code 0319 (2003 date code) - Failed.

Is there any difference between  0444 (2004) and 0319(2003) date codes for CD40106B ? The datasheet shows the latest revision as REV D Sep 2003. Kindly provide me errata or revision change history for this IC.

Thanks & Regards,

Dhaval Mehta

  • 0
    TI__Guru* 96802 points
    Dhavel,
    I will look into the changes to this part for you. In the mean time, can you post a schematic of this application and scope shots of the failure? I would like to know more about what this failure is specifically.
  • 0 in reply to Emrys Maier
    TI__Guru* 96802 points
    Dhavel,
    I have verified that there were no changes to the part in the time frame you mentioned. Perhaps with a schematic and scope shots of the failure I will be able to assist in finding the culprit.
  • 0 in reply to Emrys Maier
    Prodigy 20 points
    Thanks for the feedback. I had hoped that i would find some differences in the device based on date code. I can share the relevant portion of schematic with you. Is there any upload option in this forum ? or you can send me the e-mail address.

    Thanks & Regards,

    Dhaval
  • 0 in reply to Dhaval Mehta6
    TI__Guru* 96802 points
    When replying to a message there is a "Use rich formatting" option on the bottom right where you can add links, pictures, etc to a post. You can also email me directly at emrys(at)ti.com. I prefer to keep to the forums so information is available for future 'generations' -- but if you prefer to discuss privately, that is fine with me.