Datasheet for the SN74163N, a synchronous 4-bit binary counter with synchronous clear, in the N-suffix plastic DIP package. This compact 17 KB PDF gives the pinout, function table, load and clear timing and electrical ratings. Use it to check clock, enable and ripple-carry outputs with a scope or logic probe on older digital boards. Keep in mind the 74161 looks almost identical but clears asynchronously, so confirm the exact marking before you substitute one for the other.
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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