Tiny 6.54 KB PDF for the SN74ACT1073NSR from Texas Instruments, a bus termination array with clamp diodes used on data lines, in an NS package supplied on tape and reel. At this size the file is likely a short product or ordering summary rather than the complete datasheet. Repair work involving such a part usually means checking signal lines for diodes shorted to ground or supply with a meter. If pin tables or ratings are absent, consult the full manufacturer datasheet before ordering a replacement.
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.