peculiarity
Wide supply voltage range
LM139/139A series
2 to 36 V DC
or ± 1 to ± 18 V DC
LM2901：
2 to 36 V DC
or ± 1 to ± 18 V DC
LM3302：
2 to 28 V DC
or ± 1 to ± 14 V DC
Very low supply current consumption (0.8 mA) - independent of supply voltage
Low Input Bias Current:
25 nA
Low input offset current:
± 5 NA
Offset Voltage:
± 3 mV
The input common-mode voltage range includes GND
The differential input voltage range is equal to the supply voltage
Low Output Saturation Voltage:
250 mV at 4 mA
TTL, DTL, ECL, MOS, and CMOS logic systems are compatible with output voltages
illustrate
The LM139 series consists of four independent precision voltage comparators that compare all four low offset voltage specifications up to 2 mV. This is designed for operation over a voltage range that is powered from a single supply. It is also possible to operate from splitting the power supply and the low supply current consumption is independent of the amplitude of the power supply voltage. These comparisons also have a unique feature of the input common-mode voltage range including ground, although operated from a single supply voltage.
Applications include analog-to-digital converters with relatively simple limits, pulse, square wave and time delay generators, MOS clock timers for a wide range of VCOs, multivibrators and high-voltage digital logic gates. The LM139 series is designed to interface directly with TTL and CMOS. When running from plus and minus power supplies, they will be directly compared to the MOS interface logic LM339's low power consumption is a clear advantage over the standard.
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High-precision comparator
V OS reduces temperature drift
There is no need to power dual power supplies
Allows for a sense of grounding in the vicinity
Compatible with all forms of logic
Power consumption, suitable for battery operation