IC chip identification

[old_tv_nut]

Bipolar IC's were generally rugged. Not as subject to static damage as CMOS, and definitely had much larger more rugged transistors compared to today's digital chips, since bipolar IC transistors fundamentally cannot be shrunk down per Moore's law. You could have hundreds of transistors, but not thousands, millions or billions.

[zeno]

What is this IC in ? That may give clues. It was common to scrub parts
by some MFG's. Keeps then in control of repairs etc.

Some newer IC's have programable micros like the common Toshiba TMP###.
there is a 3 to 4 digit ## at the end that gives the part ##. Dont matter,
no way to program the "blank" IC without deep knowledge.

Zeno

[timmy]

Originally Posted by zeno

What is this IC in ? That may give clues. It was common to scrub parts
by some MFG's. Keeps then in control of repairs etc.

Some newer IC's have programable micros like the common Toshiba TMP###.
there is a 3 to 4 digit ## at the end that gives the part ##. Dont matter,
no way to program the "blank" IC without deep knowledge.

Zeno

The IC is from the Sinclair mtv1 which cannot be found but I have 3 that work perfect but trying to figure a way get around when they go bad. The last one I have I turned it off and did not come back on. It went bad just like that.