I am new to electronics, and am playing with some ICs (555, 74393, 74595 and logics like 7400) on the breadboard.
To see what happens, I would like to put LEDs at various places in the circuit. But I don't want to drain the circuit so that the logics are altered. I believe I could use MOSFETs for the LEDs, but that would use very much space, so I was hoping for a more compact solution.
This would be one application, but what I really wonder is how to pick the logical state (high/low) voltage of several nodes, and in a compact way, draw more current from these than these nodes than they can provide.
After some googling I found the 74HC541 (Octal Buffers and Line Drivers With 3-State Outputs) and the 74HC9015 (nine wide Schmitt trigger buffer/line driver), that look somewhat promising to me, to put between the circuit nodes and the current consumers.
Are these suitable for that purpose, or are there other ICs that would be better?