IC Chip Identification help

Semiconductor
1

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The marking on 6 pin chip is 49F
the marking on 5 pin chip is 554K

I have been having issue identifying these chips
Please help to identify these 2 chips

thanks

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Hello aanmol - welcome to the Forum Community. I’m sorry, I wasn’t able to identify your components either. I have sent your photos to our internal forum, in the hope that one of my colleagues will be able to identify them. I’ll let you know as soon as I have any information for you.

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HI @aanmol ,
Kindly provide better photos.
For each, one that shows the marking as clearly as possible, and one showing the components around.
In many cases the marking may contain additional info apart to the code which may hint of the maker of the unknown. The components around may suggest the functional group of the unknown, narrowing down the scope.
Cheers, heke

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Please check the attached screenshots

Anmol

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Hi @aanmol ,

Thank you for the pics.
Pretty weird stuff, I’d say.
The 554K guy has two pins connected capacitively and 3 with coupling capacitors, and no ground connection. Must be a some sort of analog switch or a prebiased amp with bipolar supplies?
The 49F punter must be an RF amplifier, although does not makes sense (that L10…, why? Impedance matching? However, no microstrips? Wide track to R56, but not from it… why?)

Could you share us, what kind of product/device we are looking at? What is it doing? The circuits around the unknowns do not make much sense (either they are black magic or poor design or something beyond mortal’s understanding).

There is a chance that the shown circuits are just badly designed. In that case it won’t much help reverse-engineering them. Just recycle.

Cheers, heke

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Thanks for the help
I am not looking for these chips anymore as we are making a new design after looking at the schematics
I appreciate your help ,I would like to close the forum.

Thanks
Anmol

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