Literature-numbered PDF datasheet, 237 KB, labelled SDLS207. No device name is included, so the file is uninformative until opened; the code resembles the numbering Texas Instruments applies to logic datasheets. Expect a logic diagram, truth table, voltage and current ratings and timing parameters. In repair work this helps identify which pins should toggle, which are tied to supply, and what levels count as valid. Confirm the chip on the PCB matches the part and package described inside.
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.