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LM339-MIL

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SNOSD54 – JUNE 2017

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Feature Description (continued)

which the output device can sink is limited by the drive available (which is independent of V+) and the β of this

device. When the maximum current limit is reached (approximately 16 mA), the output transistor will come out of

saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the

output to clamp essentially to ground level for small load currents.

7.4 Device Functional Modes

A basic comparator circuit is used for converting analog signals to a digital output. The output is HIGH when the

voltage on the noninverting (+IN) input is greater than the inverting (-IN) input. The output is LOW when the

voltage on the noninverting (+IN) input is less than the inverting (-IN) input. The inverting input (-IN) is also

commonly referred to as the reference, or VREF, input.

All pins of any unused comparators should be tied to the negative supply.

The bias network of the LM339-MIL device establishes a drain current which is independent of the magnitude of