A 513 KB datasheet in PDF, filed under literature code SDLS212 without any part number in the name. Codes beginning with SDLS are associated with Texas Instruments logic documents, so expect a logic device, but confirm which one by opening the file. Typical content includes the logic diagram, function table, recommended operating conditions and package drawings. That data helps when checking whether inputs and outputs behave correctly in circuit. Match the board marking to the document before trusting its pinout.
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.