VSC7145XRU-31/C - this IC uses PQFP package
the replacement component for that TLK2201 uses HVQFP package
also TLK2541 uses TQFP
that's why i wanted to know whats the clear difference between them
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Since you were interested in HVQFP, here's an image from Digikey. This one allows you to mount a heatsink at the top for better dissipation.