DS1831 データシートの表示（PDF） - Maxim Integrated

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DS1831

Multisupply Micromonitor

Maxim Integrated 

DS1831/A/B

The output associated with the specific input will be held low if the voltage on the input pin is less than

1.25V. If the voltage is above 1.25V the output will not sink current and will be pulled up by the required

pull up resistor. The value of the resistors is not critical in most cases but must be set low enough to pull

the output to a high state. A common value used is 10kW. If a NMI output is connected to a pushbutton

input an additional pull-up resistor can be used (to improve speed of transitions) but is not required.

During a power-up, any detected IN pin levels above VTP by the comparator are disabled from generating

an inactive (high) interrupt until at least 1 supply on the VIN inputs rises above 1.5 volts. All NMI outputs

will be held active (low) until at least one VIN reaches 1.5 volts at which point the NMI outputs will be

based on the value of the associated IN input.

TIMING DIAGRAM—NON-MASKABLE INTERRUPT Figure 8

VIN >1.25V

VTP(max) VTP

VTP(min)

VTP(min)

VTP VTP(max)

NMI

tIPD

VOL

tNMI

VOH

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