Why are you using a LM339? That's a "Low-power quad voltage comparator", not an I2C level shifter.
--->> Im never did level shifting
So you reached into the box and just pulled out a chip, is that it?
Im Trying to use everything that I have.
I thought if I connect let say CLOCK signal (1.5V) to Voltage comparator Non-inverting Input1 (pin5), and connect GND to Inverting input1(pin4), VCC= to 5V, and Vcc- to GND -->
--> I thought that Output 1 should be Vcc+(5V) (for 1) and GND (for 0) of CLOCK signal, or?????
1.5V CLOCK SIGNAL --> 5V CLOCK SIGNAL??