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TLC274: Marking Issue

Alondra Rivera
Prodigy 20 points

Part Number: TLC274

Hi team!

I have a question regarding the differences between the two following markings.

The TI datasheet only references the "TLC274C" marking. Could you please clarify the distinction between these two?

image.pngimage.png

  • 0
    Guru 320660 points

    Footnote (6) says:

    There may be an additional marking, which relates to the logo, the lot trace code information, or the environmental category of the part.

  • 0
    TI__Guru 64916 points

    Hello Alondra,

    The 42ADLNM and 57AQFQM are the date and lot codes. These will change lot-to-lot.

    The first two numbers/letters are the date code - the last digit of the year, and the month 1 (January) to C (December).

    "42" = 2024 Feb

    "57" = 2025 July

    The the last 4 characters are a partial lot code, and the last letter identifies the assembly site. With this information we can trace the lot.