Revision 6 of the datasheet for the SN74LS670, a 4-by-4 register file with 3-state outputs in the 74LS low-power Schottky TTL family, stored as a 129 KB PDF. It covers pin assignments, the function table for independent read and write addressing, electrical characteristics and switching times. Repair work on older computers, terminals and test gear often needs this to verify a chip by probing its inputs and outputs with a logic probe or scope. Check the package suffix on the actual chip against the ordering information.
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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