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SN74AHC1G86: Comparison of part: CAHC1G86BMDCKREP, SN74AHC1G86MDCKREP, and SN74LVC1G86MDCKREP and specific information regarding their lead finish.

Dhanraj Jaiswal
Prodigy 35 points
Part Number: SN74AHC1G86

Tool/software:

Dear TI Support Team,

I am currently evaluating the following three parts for my design:

  1. CAHC1G86BMDCKREP
  2. SN74AHC1G86MDCKREP
  3. SN74LVC1G86MDCKREP

I would like to request a detailed comparison of these parts. Additionally, I need specific information regarding their lead finish.

  1. Could you please confirm the lead finish of each part? If it is lead-free tin, can you verify whether it is matte tin?
  2. If the finish is matte tin, can you confirm whether it is annealed (baked)?
  3. Does the part have a nickel underlayer?

Your clarification regarding the lead finish and any underlayering will be highly appreciated, as this information is critical for my design.

Thank you for your support, and I look forward to your response.

  • 0
    TI__Genius 9401 points

    Hi Dhanraj,

    For the most detailed comparison, I'd recommend comparing the datasheets of the device.

    We don't currently recommend SN74AHC1G86MDCKREP, as this device is in last-time buy.

    The AHC device is newer than the LVC device, but the devices are pin-to-pin compatible, and for most applications, both devices are equally suited. The AHC device has a higher drive current and maximum data rate, and the LVC device has an expanded voltage range.

    All of the devices have a NIPDAU lead finish. I can't provide more details about the manufacturing of the part on this forum. I recommend reaching out to an FAE or TSR, or submitting a ticket with the Customer Support Center.

  • 0 in reply to Ian Graham
    Prodigy 35 points

    Here’s the revised reply:

    Hi ,

    Thank you for the information.

    Could you please suggest which alternate part would be best suited to replace SN74AHC1G86MDCKREP? Additionally, both parts (CAHC1G86BMDCKREP and SN74AHC1G86MDCKREP) appear similar except for the ordering number. Could you please confirm the availability or YTEOL (Years to End of Life) details of these part numbers? Furthermore, I would like to request differences comparison of the following parts:

    • CAHC1G86BMDCKREP
    • SN74AHC1G86MDCKREP
    • SN74LVC1G86MDCKREP

    Also, could you guide me on how I can reach out to an FAE or TSR to obtain more detailed information?

    Looking forward to your response.

  • 0 in reply to Dhanraj Jaiswal
    TI__Genius 9401 points

    Hi Dhanraj,

    FAEs and TSRs are assigned on a per-company basis to companies that TI has an NDA with. If you don't know yours, it is possible your company was not assigned one. If you give me a link to your company, I can double check.

    I'd recommend CAHC1G86BMDCKREP as a replacement to SN74AHC1G86MDCKREP. I can't give more details about product lifetime on this forum besides to point you to TI's official lifetime policy: https://www.ti.com/support-quality/quality-policies-procedures/product-life-cycle.html

    I gave a description of the differences in my earlier post. I'll repost it here.

    The AHC device is newer than the LVC device, but the devices are pin-to-pin compatible, and for most applications, both devices are equally suited. The AHC device has a higher drive current and maximum data rate, and the LVC device has an expanded voltage range.

    Best,

    Ian

  • +1 in reply to Ian Graham
    Prodigy 35 points

    Hi ,
    Thank you for your response. I appreciate the clarification provided earlier.

    Could you please confirm if the AHC device has a higher drive current and maximum data rate? As per the datasheet, the AHC device's continuous output current is listed as 25 mA, while the LVC device's continuous output current is 50 mA. Additionally, regarding data rate, based on propagation delay, the AHC device appears to have more delay, whereas the LVC device has less delay.

    Kindly confirm which device has a higher drive current and maximum data rate, as this information is critical for our application. Thank you for your assistance.!

    Kindly advise which part is suitable alternate solution for the SN74AHC1G86MDCKREP. For details, please find coparison sheet attached.

    CAHC1G86BMDCKREP Vs SN74AHC1G86MDCKREP Vs SN74LVC1G86MDCKREP.docx

  • 0 in reply to Dhanraj Jaiswal
    TI__Genius 9401 points

    That's my mistake - you're right, the LVC has lower delay and higher drive strength.

    Best,

    Ian