A 508 KB datasheet in PDF format with the literature number SDLS195 and no other identifying detail. The file name is uninformative about the component; the code resembles Texas Instruments logic documentation numbering, so open the document to see the part title. Look for pin assignments, the function table, supply voltage range and propagation delays. These help when tracing signals through a logic chip or testing whether an output responds. Confirm the board marking matches the described device and package.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.