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ST809 - 3-Pin Microprocessor Reset Monitors

Description

The ST809 series are power supply supervisory circuits used to monitor the supply change in microprocessors and digital systems.

The ST809 series provide a reset to the microprocessors during system power-up, power-down and brown-out conditions.

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Datasheet Details

Part number ST809
Manufacturer Semtron
File Size 156.17 KB
Description 3-Pin Microprocessor Reset Monitors
Datasheet download datasheet ST809 Datasheet

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Microprocessor Reset Monitors ■DESCRIPTION The ST809 series are power supply supervisory circuits used to monitor the supply change in microprocessors and digital systems. The ST809 series provide a reset to the microprocessors during system power-up, power-down and brown-out conditions. The ST809 is designed to monitor the VCC supply voltage and assert a reset signal whenever the voltage declined below the preset threshold. The reset signal remains for at least 140ms after VCC has risen above the threshold. The ST809 provides an active-low reset output. The ST809 series are optimized to reject fast transient glitches on the VCC line. Low power supply current of 10μA makes the ST809 more suitable for battery-powered applications. The ST809 series are available in SOT23-3 package.
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