UT01VS50L

Standard Products UT01VS50L Voltage Supervisor Data Sheet July 28, 2014 www.aeroflex.com/voltsupv FEATURES  4.75V to 5.5V Operating voltage range  Power supply (VDD) monitor set by the internal voltage reference at 4.65V  Precision Input Voltage Monitor using an internal 1.25V voltage reference  Watchdog Timer Circuit monitoring activity on WDI input - Nominal timeout 1.6s  RESET output responding to the VDD monitor and the manual reset input MR - Nominal RESET pulse width 200ms  RESET level valid for VDD>=1.2V  Operating Temperature Range -55oC to +125oC  Low Power, Typical 400uA  Operational environment: - Total dose: 300 krad(Si) - SEL Immune: <110 MeV-cm2/mg @125oC - SET Immune: <80 MeV-cm2/mg  Packaging options: - 8-lead dual-in-line flatpack  Standard Microelectronics Drawing (SMD) 5962-11213 - QML Q and V INTRODUCTION The UT01VS50L’s function is to monitor vital supply and signal voltages in microprocessor systems. It provides for safe reset during power up, power down and brownout conditions by using an internal precision voltage reference. The UT01VS50L monitors activity at an independent watchdog input by employing an internal timer and a watchdog output that goes low if the input is not toggled within 1.6s. It provides for precision voltage threshold detection on an independent voltage input which could be used for battery or supply-low monitoring of a supply voltage other than VDD. The UT01VS50L includes an active low manual reset with an internal pul...