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LM4562: LM4562/LME49720 - EOL? really?!?! WHY?

Dirk Wright
Prodigy 180 points
Part Number: LM4562
Other Parts Discussed in Thread: LME49720, OPA1611, BUF634

So, I was on Mouser looking for parts, and I found that the LM4562 and LME49720 in TO-99 cans are being discontinued. Why? These are GREAT parts! We just went through this cycle where the DIP versions were going to be EOL'd, but now the TO-99 versions instead? The LME49710 continues in the TO-99 can, apparently? Please explain! I have boards that use these parts! My business is going to be negatively impacted by your decision!

  • 0
    TI__Guru** 104595 points
    Hi Dirk,

    I'll look for further information on this as the MA and NA packages are still shown as active and HA packages are shown as lifebuy. I'll come back to you as soon as possible.

    Best regards,
    -Ivan Salazar
    Texas Instruments
  • 0 in reply to Ivan Salazar
    Prodigy 180 points

    Thanks. I just find it confusing that TI wants to terminate these outstanding parts (including the LME49713) while it keeps relatively poor performing op amps like the 741 in production. It's also confusing that the 5534/32 are still in production also, when these newer op amps are clearly intended to replace them. The LME series are outstanding parts with unmatched performance in many areas like distortion and drive capability. They were developed by National before TI bought them, as I understand it. For small volume manufacturers like myself, SMD's are not practical. I need through hole devices, and I need good ones.Almost all of the op amps and other IC's I use come from TI. I depend on you guys for great parts.

    A couple of years ago, TI wanted to discontinue the PDIP versions of these op amps. I complained back then because I had a lot of circuit boards designed for them. I had to re-design my circuit boards for the only other through hole version available, which was the TO-99. Now, TI turns around and wants to discontinue some of those instead, while I have many circuit boards that now take the TO-99 versions. I feel like a dog chasing his tail here.


    Since the LM4562 and LME45720 are basically the same op amps, why not just discontinue one of them in TO-99 if you really need to cut production?

  • 0 in reply to Ivan Salazar
    Prodigy 180 points

    Hello Ivan Salazr, you never got back to me on the parts! I need to know the status of LME49710, LME49720/LM4562. Thanks.

    Your company does not sell any alternatives for these parts. I can't find any op amps that have super low distortion and low noise (2.7nV or less).

    Thanks.

    Dirk Wright

  • 0 in reply to Dirk Wright
    TI__Guru** 104595 points
    Dirk,

    Sorry for not coming back.
    LME49710 remains without changes, it is in Active state on its three packages.
    LM4562 and LME49270 will remain in Lifebuy status for its TO-99 package. Originally it was SOIC and PDIP that were going into Lifebuy. Don't know exactly why there was a change on this but its the info I got back.
    All recent LMx devices that are going into Lifebuy status are related to a process end of life, not the device itself.

    Best regards,
    -Ivan Salazar
    Audio Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 180 points
    Thank you for your prompt reply. Someone needs to contact Mouser because they have the LME49710 as Lifebuy status. I got confused by that, so I ordered some just to be sure.
    Dirk
  • 0
    Prodigy 180 points
    Digikey also has the LME49710 as life time buy.
  • 0 in reply to Dirk Wright
    TI__Guru** 104595 points
    Dirk,

    I will check this out with the team and come back to you soon.

    Best regards,
    -Ivan Salazar
    Audio Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 180 points
    OK, thanks. I can't find any part that can replace these. You don't have any other op amp that can drive 600 ohms directly at low distortion and noise. These are amazing parts and I hate to see them go away. I can't any substitute from any other manufacturer either. What a shame if they go away.
  • 0 in reply to Dirk Wright
    TI__Guru** 104595 points
    Dirk,

    After I consulted with the team about the status of LME49710 and LM4562 I got the following information:
    LM4562 - SOIC and PDIP packages are in Active status while TO-99 is being EOL
    LME49710 - Unfortunately this one is EOL for the three packages (SOIC, PDIP and TO-99). It seems that Mouser received the PCN about this and updated the status, while TI site was not updated. Proposed replacement is OPA1611.

    TI product folders for these devices show the correct status now. I am very sorry about all the confusion generated because of this.

    Best regards,
    -Ivan Salazar
    Audio Applications Engineer - Low Power Audio & Actuators
  • 0 in reply to Ivan Salazar
    Prodigy 180 points
    Thanks for the update. It is indeed very sad that TI has decided to discontinue the LME49710. You do not make a suitable replacement, besides the dual LM4562. The OPA1611 does not drive 600 ohms (it is not specified to drive that load - only 2k ohms is listed on the data sheet). So, in order for me to use the OPA1611 to drive 600 ohms, I would need some kind of buffer in addition, like the BUF634, which adds to my cost and hassle. I don't know of any other manufacturer who makes an equivalent part to the LME49170.