Texas Instruments SN74ABT16823DGGR datasheet, a 36.9 KB PDF for an 18-bit bus interface flip-flop with 3-state outputs in the ABT logic family, packaged in DGG TSSOP and shipped on tape and reel. Expect a pin diagram, function table, clock and enable timing, and electrical limits. In repair it helps trace data buses on industrial, networking or computer boards, check clock and clear signals with a scope and locate a failed bit. Match the package marking before relying on the pin numbering.
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.