A component datasheet in PDF form, 204 KB, filed under the literature code SDLS168. The name gives only a document number, which follows the pattern Texas Instruments uses for its standard logic data sheets, so the exact part must be read from the first page. Open it in any PDF viewer to get the pinout, truth table, supply range and package drawings. Before replacing a chip on a board, confirm that the marking on the package matches the part number printed in the document.
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.