LMV324A: What is the correct TI designation for the footprint for the PW-packaged version of this part?

Chris Parker

Part Number: LMV324A

Tool/software:

I am creating the ECAD model for the TSSOP-14 version of this part. TI calls this package the PW package (or more specifically "PW (R-GDSO-14)"). Due to ambiguity in how different manufacturers use the term TSSOP, in setting up a naming convention for component footprints, we need to include the manufacturer & manufacturer's name for the package in the ECAD footprint name. Which is the proper name for this footprint from TI's point of view? Is it PW, PW0014, R-GDSO-14, or something else?

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 318700 points

TSSOP is not unique.
R-PDSO-Gxx is a JEDEC designator; it's not unique either.
PW0014 is not used by TI.
PW is TI's package name, but also needs the number of pins to be unique.

As far as I can see, TI uses "PW (R-PDSO-G14)" for packages that are already defined by JEDEC and where TI does not (expect to) make changes. For other packages, the package drawing has an identifier like "DYY0014A", which identifies a specific revision of the package drawing.

For this TSSOP package, you could use "TI PW 14" or "TI TSSOP (PW) 14".
For this SOT-23 package, you could use "TI DYY0014A" or "TI DYY 14" or "TI SOT-23-THN (DYY) 14".
(I would include "TSSOP" or "SOT-23-THN" only if not already specified elsewhere.)

See ti.com/support-packaging/find-packages.html for TI's package database.

0 Chris Parker over 1 year ago

Prodigy 10 points

Clemens Ladisch , I got PW0014 (actually PW0014A, but I believe that the A is just the drawing revision) from here (page 43): https://www.ti.com/lit/ds/symlink/lmv324a.pdf?ts=1729190537562&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FLMV324A .

Also, this would follow the Y[YY]XXXX package naming pattern (where Y[YY] is a 1- to 3-character package name and XXXX is a zero-padded pin count) that TI seems to use for all of its IC packages.

0 Clemens Ladisch over 1 year ago in reply to Chris Parker

Guru 318700 points

TI updated the package database and this datasheet last week. I have not heard anything official from TI, but it appears that the PW0014 pattern can indeed be used to identify the footprint.

0 Ron Michallick over 1 year ago in reply to Clemens Ladisch

TI__Guru**** 167546 points

Chris,

PW0014A is the footprint. 'PW' is a TI code for common name TSSOP.

0 Chris Parker over 1 year ago in reply to Ron Michallick

Prodigy 10 points

Many thanks. This was my assumption, but I wanted to confirm it before telling my team to use that in their footprint names. My confusion was that until recently (as Clemens Ladisch pointed out, TI updated their database last week, after I posted my initial question), datasheets appeared to label the 14-terminal "TSSOP" package as "PW", with no other information, whereas the other packages (D, DBV, DGK, etc.) all included a 4-digit zero-padded pin count as part of the package name. I was bitten once by assuming that TSSOP is unambiguous, and then I ran into VSOP, MSOP, etc., all of which get called "TSSOP" and aren't necessarily compatible with each other.

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LMV324A: What is the correct TI designation for the footprint for the PW-packaged version of this part?