Good morning,
What about the input common mode range of the comparator LM239.. It is valid what the datasheet says about out of range at page 13?:
The following list describes the outcomes of some input voltage situations.
• When both IN– and IN+ are both within the common-mode range:
– If IN– is higher than IN+ and the offset voltage, the output is low and the output transistor is sinking
current
– If IN– is lower than IN+ and the offset voltage, the output is high impedance and the output transistor is
not conducting
• When IN– is higher than common mode and IN+ is within common mode, the output is low and the output
transistor is sinking current
• When IN+ is higher than common mode and IN– is within common mode, the output is high impedance and
the output transistor is not conducting
• When IN– and IN+ are both higher than common mode, the output is low and the output transistor is sinking
current
Thank you..
