APX809
Features
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- - Pu
- Pu
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- - Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages Fully Specified Over Temperature Available in three Output Configurations sh-Pull RESET Active Low (APX809) sh-Pull RESET Active High (APX810) 200ms Typ Power-On Reset Pulse Width 30µA Supply Current (Typ.) Guaranteed Reset Valid to VCC = +1V o External ponents SOT23 and SOT23R: Available in “Green” Molding pound (No Br, Sb) Lead Free Finish/Ro HS pliant (Note 1)
General Description
The APX809/810 are used for microprocessor ( µP) su pervisory circuits to monitor the power supplies in µP and digital systems. They prov ide excellent circuit r eliability an d low cost by eliminating e xternal ponents and a djustments w hen used with +5V, +3.3V, +3.0V powered circuits. These circu its p erform a single fu nction: t hey assert a reset signal whenever the VCC supply voltage declines below a p reset threshold, kee ping it a sserted fo r at le ast 240ms a fter VCC ha s risen ab ove...
