Datasheet in PDF, 273 KB, named with literature code SDLS208 and nothing else. The SDLS prefix points toward Texas Instruments logic documentation, though the specific device is not stated and must be taken from the first page. Content of this type normally covers pinout, logic function, switching characteristics and package dimensions, all useful for confirming correct behaviour of a gate, latch or counter on a board. Verify the part marking before relying on the pin numbers when probing.
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.