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UT01VS33D Datasheet دیتاشیت PDF دانلود

دیتاشیت - Aeroflex Circuit Technology - Voltage Supervisor

شماره قطعه UT01VS33D
شرح مفصل Voltage Supervisor
تولید کننده Aeroflex Circuit Technology 
آرم Aeroflex Circuit Technology 





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UT01VS33D شرح
Standard Products
UT01VS33D Voltage Supervisor
Data Sheet
July 28, 2014
www.aeroflex.com/voltsupv
FEATURES
3.15V to 3.6V Operating voltage range
Power supply (VDD) monitor set by the internal voltage
reference at 3.08V
Precision Input Voltage Monitor using an internal 0.6V
voltage reference
Watchdog Timer Circuit monitoring activity on WDI input
- Nominal timeout 1.6s
RESET_OD output responding to the VDD monitor and the
manual reset input MR
- Nominal RESET_OD pulse width 200ms
RESET_OD 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 5962-11213
- QML Q and V
INTRODUCTION
The UT01VS33D’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 UT01VS33D 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 UT01VS33D includes an active low manual reset with an
open drain output.
APPLICATIONS
Voltage Supervisor function for various systems including
microprocessors, microcontrollers, DSPs and FPGAs
Critical battery and power supply monitoring
Replacement of older discrete solutions to improve reliability,
accuracy and reduce complexity of the systems
MR
RESET &
DIGITAL CONTROL
VDD +
WDI TIMER
3.08 V
GND
0.6 V
VREF
WDI TRANSITION
DETECTOR
OSC
PFI +
WDO
RESET_OD
WDI
PFO
Figure 1. UT01VS33D Functional Block Diagram
1

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