RT9801A/B
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User Programmable Micro-Power
Voltage Detectors
General Description
The RT9801A/B is a micro-power
voltage detector supervising the power supply
voltage level for microprocessors (μP) or digital systems.
It provides user programmable threshold levels with 0.
1V step ranging from 1.
5V to 5V, which covers most digital applications.
It features low supply current of 3μA.
Selection of VTH is easily achieved through 3 pins connected to GND, VDD or floating for different threshold
voltage settings.
Two versions of threshold
voltages, 1.
5V to 4V and 2.
5V to 5V, which are programmed in factory are offered by customer demands.
The RT9801A/B performs supervisory function ...