UIC809

DESCRIPTION 

The UTC UIC809 series are resetting circuits which can monitor 

power supplies especially in microprocessor based systems. 

In normal operation, the UTC UIC809 series can assert a reset 

under any of the following situation: the power supply drops below 

a designated reset threshold level (which is available for 3V or 3.3V

or 5V system) is forced low. 

There is an internal active lowRESET output which has already 

been guaranteed to remain asserted for at 140ms least while VCC

rises above the designed threshold level. 

FEATURES 

* Voltage monitor for 3V or 3.3V or 5V power supplies 

* Valid RESET remains with VCC as low as 1V 

* Typical supply current: 5µA 

* Fixed 140ms minimum reset pulse width 

* With Manual reset input 

* Push-Pull RESET Active Low Output