Datasheet with literature number SDLS154, a compact 219 KB PDF. The name tells nothing about the specific chip; the SDLS code pattern is that of Texas Instruments logic family documents, so read the header to learn which device it covers. Typical content includes the pin diagram, logic function, absolute maximum ratings and dimensions. It helps when measuring signals around a logic chip or confirming pin 1 orientation. Make sure the physical part number matches the sheet before relying on the data.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @datasheet_technar_org. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.