About LMV321IDCKR top mark?

xuan li

Other Parts Discussed in Thread: LMV321

Hi All,

i got some LMV321DCKR from my friend, because they just 20pcs, i can't find the chip reel and the chip label.

i want to double check the P/N before i mounted it on PCB, this chip's top mark is R3F.

Unfortunately, i found the top mark on the Datasheet is R3C,R3I,R3O,R3R,R3Z, no R3F, But my friend can sure the chips are absolutely LMV321DCKR.

so i want to check which side is right, my friend or TI Datsheet?

Thanks very much.

Xuan

over 8 years ago

0 Ron Michallick over 8 years ago

TI__Guru*** 139956 points

BR,

I this link is a lookup, www.ti.com/.../partlookup.tsp
I could not find R3F

Nevertheless the first two characters [R3] plus the package [DCK] and pin count [5] tells me that this is a LMV321.

0 xuan li over 8 years ago in reply to Ron Michallick

Prodigy 30 points

Hi Ron,

thanks very much for your reply.
could you help me explain in detail how R3+[DCK]+pin count[5] = LMV321,
is there a book to describe the naming rules?

BR

0 Ron Michallick over 8 years ago in reply to xuan li

TI__Guru*** 139956 points

Third character is assembly site code so it's not part of device name.
The first two chars are sometimes reused for other devices (34*34 is only 1156)
Therefore knowing the package and pin count to resolve cases where first two characters map to more than one device name.

0 xuan li over 8 years ago in reply to Ron Michallick

Prodigy 30 points

Hi Ron,
Thanks very much.
So that is maybe TI uses a new factory to assemble LMV321, and TI haven't updated the 'F' in the Part marking lookup linking? Is there wildcard available when i search in Part marking lookup linking?

And could you help me explain (34*34 is only 1156), '34' meaning is a,b..x,y,z,1,2,..9,
and should it be 26 plus 10 = 36? Which letters will not be used?

In this case, Will TI release PCN Customer Notifications to the customers?

thanks
BR
xuan

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About LMV321IDCKR top mark?