Datasheet for the LM741, the classic general-purpose operational amplifier found in countless analog circuits, supplied as a 148 KB PDF. It describes pin connections, offset null pins, supply range, input and output characteristics and typical application circuits. During repair it helps confirm which pins carry the inverting and non-inverting inputs, output and supply rails, and what voltages to expect around a working stage. Check the package type and maker prefix on the actual part, because pinouts in metal can and DIP versions differ.
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. Enginerys does not host this file.
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