Dear Sir or Madam
We us the LM139AQML-SP (5962R9673802VDA) on a space hardware. The comparator works as schmitt-trigger without special demands concerning precision or speed. In a first design, the comparator was supplied by 5V (to ground). On the negative input a reference voltage was applied with 3.59V. The positive input voltage was in the range of 0 to 5V. That let to a problem with the Common Mode Voltage Range (V+-2V) at low temperatures because of the too high voltage on the positive input (and also on the negative input). We proposed now to the customer to increase V+ to 12V to have a valid common mode input range up to 10V and because the output is open drain and therefore intependent from V+. But the customer requested a statement from TI, that the comparator will work with these voltages under all conditions. Can you please confirm, that the comparator works under all conditions outlined in the datasheet with these voltage levels applied (Vin+: 0 to 5V, Vin-: 3.59V, V+: 12V, V-: ground))?
Thanks a lot for your support
Kind Regards
Rade
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