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DS1811 Schematic ( PDF Datasheet ) - Dallas Semiconductor

Teilenummer DS1811
Beschreibung 5V EconoReset
Hersteller Dallas Semiconductor
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Gesamt 5 Seiten
DS1811 Datasheet, Funktion
www.DataSheet4U.com
www.dalsemi.com
DS1811
5V EconoReset with Open Drain Output
FEATURES
Automatically restarts a microprocessor after
power failure
Maintains reset for 150 ms after VCC returns
to an in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltage
reference and voltage sensor
Low-cost TO-92 or space saving SOT-23
packages available
Efficient open-drain output with internal
5.5 kpull-up resistor
Operating temperature -40°C to +85°C
PIN ASSIGNMENT
3
12
SOT-23 PACKAGE
123
123
TO-92 PACKAGE
See Mech.
Drawings Section
PIN DESCRIPTION
TO-92
1 RST
2 VCC
3 GND
Active Low Reset Output
Power Supply
Ground
SOT-23
1 RST
2 VCC
3 GND
Active Low Reset Output
Power Supply
Ground
DESCRIPTION
The DS1811 EconoReset uses a precision temperature reference and comparator circuit to monitor the
status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition,
the reset signal is kept in the active state for approximately 150 ms to allow the power supply and
processor to stabilize.
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