The LM139 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 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 is a distinct advantage over standard comparators.
The LM139 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 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 is a distinct advantage over standard comparators.