TI datasheet SDLS132, a 339 KB PDF in which only the literature number is given. The specific logic device has to be read from the document header. SDLS numbers belong to Texas Instruments' older bipolar 74-series datasheets, which often cover the 54 military and 74 commercial versions together. Use it to look up the pin layout, truth table and timing when testing a suspect chip with a logic probe or scope. Always compare the full chip marking and package first.
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.