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SN54HC32: What's different about JM38510/65201BCA and M38510/65201BCA?

Ryan Lee TW
Intellectual 626 points
Part Number: SN54HC32

Hi Expert,

My customer wants to know the difference between JM38510/65201BCA and M38510/65201BCA?

Although datasheet said they are just the same thing, but they must be something different, right?

Because my end customer really care about the difference between with "J" and without "J".

Thanks a lot.

  • +1
    Guru 287370 points

    See section 3 of the DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer application report:

    Per MIL-PRF-38535 Paragraph 3.6.3.2 “JAN” or “J” mark. The "J" marking is a legacy certification mark that was required by MIL-M-38510 device specifications and qualified on a QPL part by part basis. Since the “J” is often mistakenly considered part of the PIN, it may continue to be marked in front of the military designator portion of the device specification part number at the QML vendor’s option. This "J" was not and shall not be considered element of the official part number used to assign a national stock number.

    JM38510 was the original designator used by Texas Instruments for JAN products; however, some customers prefer to order by the M38510 and do not have the flexibility to accept the JM38510 designator. Therefore TI has set up alternate part numbers so that a given JAN device can be ordered by either the JM38510 or M38510 designator. The part making itself is the same in either case.