LM2903YPT comparator functionality

[Mario84]

Hello,

I am redesigning a circuit that uses the comparator LM2903YPT, because the previous circuit had an undefined output because of the inputs that were outside the common mode range.

According to the datasheet the input common mode range for my application is between -5V53 to -2V, considering also the entire operating temperature range.

I expected that the output should change between Vol and Voh, where Voh is similar to Vcc+ and Vol is -5V5+0.25V=-5V25.

As I can see in the simulation the output changes between  ~0V and -304mV. The inputs are now inside of the common mode range.

Could you hep me please to understand the behavior of the comparator? Or if there is any issue in my circuit?

 

Thank you in advance!