Datasheet PDF of roughly 430 KB identified by a Texas Instruments literature code only, with no part number stated in the name. SDLS numbers belong to TI logic documentation, so it most probably covers a 74-series TTL device, though the actual part has to be read from the file itself. Expect pin layout, function table, ratings and timing information. Once identified, it helps with tracing logic signals and checking a suspect IC, provided the part number matches the chip marking.
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.