Small 177 KB PDF datasheet labelled SDLS147, with no device name in the title. The code matches the Texas Instruments literature series for standard logic integrated circuits, so the specific part is shown inside the document. Look for the pin diagram, truth table, operating conditions and package dimensions. It is a quick reference when checking a logic chip on a board for wrong output states or a shorted supply pin. Confirm that the chip marking and package agree with the sheet before use.
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.