PDF datasheet numbered SDLS130 by Texas Instruments, 561 KB in size. Only the document code appears in the name, so the specific logic IC has to be identified from the title page. SDLS literature covers TI's older bipolar logic families, and documents of this size often include several package and speed versions. Use it for pinouts, logic diagrams, recommended operating conditions and switching specs, after matching the device marking on the board.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)