The LM139 series consists of four independent precision voltage comparators with an
offset voltage specification as low as 2 mV max for all four comparators. These were designed
specifically to operate from a single power supply over a wide range of voltages. Operation from
split power supplies is also possible and the low power supply current drain is independent of the
magnitude of the power supply voltage. These comparators also have a unique characteristic in that
the input common-mode voltage range includes ground, even though operated from a single power
supply voltage.
Application areas include limit comparators, simple analog to digital converters; pulse,
squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high
voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS.
When operated from both plus and minus power supplies, they will directly interface with MOS logic—
where the low power drain of the LM139/LM139A is a distinct advantage over standard
comparators.
The LM139 series consists of four independent precision voltage comparators with an
offset voltage specification as low as 2 mV max for all four comparators. These were designed
specifically to operate from a single power supply over a wide range of voltages. Operation from
split power supplies is also possible and the low power supply current drain is independent of the
magnitude of the power supply voltage. These comparators also have a unique characteristic in that
the input common-mode voltage range includes ground, even though operated from a single power
supply voltage.
Application areas include limit comparators, simple analog to digital converters; pulse,
squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high
voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS.
When operated from both plus and minus power supplies, they will directly interface with MOS logic—
where the low power drain of the LM139/LM139A is a distinct advantage over standard
comparators.