LMC555: Logo

Heinrich Venter

Part Number: LMC555

Tool/software:

Hi. We're getting parts marked LMC555CM with the National Semiconductor logo. However, we're having temperature issues, and wondered if the 555 might be counterfeit. Is it still produced with the National Semiconductor logo?

over 1 year ago

0 Ron Michallick over 1 year ago

TI__Guru**** 171956 points

Hello Heinrich,

Logo may or may not be present. The future is no logos. Buying from a authorized distributor is the way to always get true TI products. Where did you purchase the LMC555?

Do you have the reel label with full part number and county codes?

We can also address the temperature issues; can you explain further?

0 Heinrich Venter over 1 year ago in reply to Ron Michallick

Prodigy 90 points

Hi Ron. Thanks for your reply. So you're saying a part manufactured today can still have the National Semiconductor logo? I don't yet know where the parts were bought from. We're getting severe frequency drift over temperatures exceeding 36°C. I can't give exact details, as I have not yet investigated it myself.

0 Ron Michallick over 1 year ago in reply to Heinrich Venter

TI__Guru**** 171956 points

Heinrich,

For orderable LMC555CMX/NOPB, it can come with logo or letters TI.

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LMC555: Logo