The 741 does not work on 5V single ended supplies, and it does not even
come close to swing even 70% of the supply at 7V which is ist minimum
supply. The LM358 or 324 will work at 5V but only swing to +3.5V at the
output. It is inexpensive and second sourced. There are rail to rail
opamps that will do this right, for example from Microchip. The 741 was
obsolete before I started even thinking about using it. And it's a really
crappy opamp, but not as bad as the error amps in a TL494 ;-).

If the follower need not be linear you can use a CMOS gate directly. You
can also use a simple emitter follower or whatever else suits your needs.

Peter

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