GregS wrote:

Eeyore wrote:
GregS wrote:

The RC4136 was used in a lot of stuff. It had a faster slew rate, and I
measured up to 1.8 v/us, and was called a quad 741. Weird pins too.

I know the one. Avoided it like the plague if only for the pinout !

Didn't TI make a TL075 with the same pinout ?

Right, and I always wanted to use them in my old Soundcraftmen equalizer, then I could not get them.
I was set up to make conversion boards but never finished. I still have that equalizer but I don't use it.

TI have now deleted it. Little demand I suppose. I only know because I have a very early copy of the bifet
manual.

Graham