Peavey used the 8 pin MN3007. I haven't looked at one of those chips for over 20 years so it is easy to forget. I looked in my drawer and found 4 shiny new MN3007's.
I'm not sure where I picked up the MN3005's. I believe it is the 4096 that Ibanez used. I was thinking that Peavey also used them in one of their products since I picked them up from the dealer when I was doing Peavey repairs. I even found 4 of the MN3101 clocks in my stash. Now I wonder where my MN3005's are located.
I still have a pedal around here that I modified to use as a slap back echo. I thought the guts were stored in a coffee can for protection. Now I can't find it. But where ever it is it is safe.
I also found a slap back "Danelectro FAB" delay that sold for only for $15 At Sweetwater. At that price I expected a noisy analog delay. When I opened it it was a digital delay! The slap back was a little too short but you can modify them easily by taking out the timing chip resistor and bringing two wires out to a variable resistor. It makes a really great delay that can be mounted and wired into an amplifier that doesn't have any sound FX. It's a cute little orange pedal that loves to gobble batteries but with a wall wart or with the guts mounted in a chassis of an amp it's great source of echo.
You can buff out the highs with a resistor and a cap and the decay will be similar to an analog delay. It decays faster and the highs are softer.