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Partname:ADM809
Description:uProcessor Supervisory Circuit in 3-Pin, SOT-23, Active Low Reset Signal
Manufacturer:Analog Devices
Datasheet:PDF (172K).
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The ADM809/ADM810 supervisory circuits monitor the power supply voltage in microprocessor systems. They provide a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 240 ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with VCC as low as 1 V. The ADM809 provides an active low reset signal (RESET) while the ADM810 provides an active high signal (RESET) output. Six reset threshold voltage options are available suitable for monitoring a variety of supply voltages. Refer to Table I.

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