Hello,

Yes, there are smaller (8 pins) comparators.
The LM393 is a double comparator in an 8 pin housing.
I attached the datasheet to look at the pinout.

Bertus

 

Thanks Bertus, that is just perfect!

iit's been a good week and I've learned a lot. Thanks guys for your expertise.

 

Bytraper,
For the unused comparator, ground both input pins - otherwise the unused channel may oscillate by itself and cause problems.

 

Thanks Sarge, glad you mentioned this because in my schematic i had them doing nothing lol.

 

Did you mean R7? It was a demo value, since the power supply wasn't defined.

Nope, I meant R8.

Given that R8 turns off the transistor almost anything will work. The current for the transistor comes directly from the output of the LM339, and if you are providing 30 ma to the LED the LM339 is sinking much, much less (0.3ma?). This is one of my better designs.

My point is that using ~3k for R8 as a current source, the output will have more drive for the load.

If our OP is driving TTL, they will need to use a pull-up resistor to their TTL Vcc, which needs to be in the vicinity of 5v.
Then, R8 = 5v/4mA = 1.25k; 1.2k or 1.3k should work. Otherwise, they may not have enough source or sink capability to toggle their TTL input on or off.