The maximum voltage that can be applied to the input pins is the supply voltage (VCC) + 0.3V. Exceeding this voltage can cause damage to the device.
To prevent oscillation, ensure that the input signals are properly filtered and decoupled, and that the output is properly loaded. Additionally, consider adding hysteresis to the comparator by connecting a resistor and capacitor between the output and the non-inverting input.
The minimum input voltage required for the comparator to function correctly is typically around 1.5V to 2V below the supply voltage (VCC). Operating the comparator at input voltages closer to the supply voltage can result in incorrect operation.
No, the LM139JB is a comparator, not an amplifier. It is designed to compare two input voltages and output a digital signal indicating which input is higher. It is not suitable for amplifying small signals.
The pull-up resistor value depends on the load current required and the output voltage swing. A general rule of thumb is to choose a resistor value that limits the output current to 1-2mA. A higher value resistor may be required for higher output voltage swings.
LM139JB datasheet
by Texas Instruments
