I only took a quick look around, wasn't so simple. TK chips usually have something to do with audio. 18 pins, guessing its not and amplifier, so maybe a mixer or something like that.
I only took a quick look around, wasn't so simple. TK chips usually have something to do with audio. 18 pins, guessing its not and amplifier, so maybe a mixer or something like that.
at first I thought perhaps the S was missing as in STK3000-A for audio chips but they don't come in DIP arrangements. I couldn't locate anything as well even when referring to this MONSTER database of components: