Chip Information

[Parade]

I ripped apart an old TV converter unit and I found some chips in it, I was wondering if they could be used for audio.

I have these and this is what they say on them

Goldstar
GD4069UB
9252

MC14011BCP
FFPH9251

JRC
3900N
A3004A

Goldstar
GD4015B
9310

MC14081BCP
FFRB9312

MC14512BCP
FFLH9236

I wasn't sure about the numbers on them, so I wrote down everything I see on them.

[The Tone God]

GD4069UB = Hex Inverter
MC14011BCP = Quad-2-input NAND gate
GD4015B = Serial-Input, Parallel Output Static Shift Register
MC14081BCP = AND of some sort
MC14512BCP = 8-bit encoder

All of these are digital logic chips. No much use in audio stuff. Well maybe the 4069 could be use in a "hot tubes" style distortion box.

Andrew

[Peter Snowberg]

I've been playing with CMOS inverter distortions a lot lately and getting some fantastic results. Play around with the GD4069UB.

That JRC3900N is a Quad Norton Amplifier which you can use in almost any opamp circuit. It's a current input amp with an input circuit that's more similar to a bipolar logic circuit than an opamp. I suspect there could be a neat new unique pedal waiting in that chip. RadioShack used to sell it in the late 70s. Search on LM3900N for a datasheet.

-Peter