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UM809 - 3-Pin Microprocessor Reset Circuits

General Description

The UM809/810 series are ultra low current, cost effective system supervisory circuits designed to monitor the power supplies in digital systems.

Key Features

  • z CPU and Logic Circuit Reset z Power Fail Detectors z Computers z Embedded Systems z Battery-Powered Equipments z Intelligent Instruments z Wide Operation Voltage Range of 1V to 10V z Typical Quiescent Current of 3μA z No External Components z 3-Pin Small SOT323 and SOT23 Packages z VCC Transient Immunity z Correct Logic Output Guaranteed to VCC=1.0V z Precision VCC Monitor for 2.5V, 3.0V, 3.3V, and 5.0V Supplies z Available in 2 Output Configurations Push-Pull Low Active Reset Output (UM809).

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Datasheet Details

Part number UM809
Manufacturer Union Semiconductor
File Size 280.16 KB
Description 3-Pin Microprocessor Reset Circuits
Datasheet download datasheet UM809 Datasheet

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UM809/810 3-Pin Microprocessor Reset Circuits UM809/810 SOT323/SOT23-3 General Description The UM809/810 series are ultra low current, cost effective system supervisory circuits designed to monitor the power supplies in digital systems. They provide a reset signal to the host processor when necessary, offer excellent circuit reliability & low cost by eliminating external component and adjustment when used with +5V, +3.3V, +3.0V or other voltage powered circuits. The reset output is driven active within 10µs of power supply falling through the reset voltage threshold. Reset is keeping active for a minimum of 140ms after system power supply has risen above the reset threshold. Reset threshold suitable for operation with variety of supply voltage are available.