DS1816 Dallas Semiconductor, DS1816 Datasheet

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DS1816

Manufacturer Part Number
DS1816
Description
3.3V EconoReset
Manufacturer
Dallas Semiconductor
Datasheet

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FEATURES
DESCRIPTION
The DS1816 EconoReset uses a precision temperature reference and comparator circuit to monitor the
status of the power supply (V
signal is generated which forces reset to the active state. When V
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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Automatically restarts a microprocessor after
power failure
Maintains reset for 150 ms after V
to an in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltage
reference and voltage sensor
Accurate 5%, 10% or 20% power monitoring
20% tolerance for use with 3.0-volt systems
Low-cost TO-92 or space saving SOT-23
packages available
Efficient open-drain output with internal
5 k =pull-up resistor
Operating temperature -40 C to +85 C
CC
). When an out-of-tolerance condition is detected, an internal power-fail
CC
returns
1 of 5
PIN ASSIGNMENT
PIN DESCRIPTION
TO-92
1
2
3
SOT-23
1
2
3
TO-92 PACKAGE
Drawings Section
See Mech.
1 2 3
1 2 3
V
GND
V
GND
RST
RST
CC
CC
3.3V EconoReset with
CC
returns to an in-tolerance condition,
Open Drain Output
Active Low Reset Output
Power Supply
Ground
Active Low Reset Output
Power Supply
Ground
SOT-23 PACKAGE
1
3
2
DS1816
111999

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DS1816 Summary of contents

Page 1

... Efficient open-drain output with internal 5 k =pull-up resistor Operating temperature - +85 C DESCRIPTION The DS1816 EconoReset uses a precision temperature reference and comparator circuit to monitor the status of the power supply (V CC signal is generated which forces reset to the active state. When V the reset signal is kept in the active state for approximately 150 ms to allow the power supply and processor to stabilize ...

Page 2

... OPERATION - POWER MONITOR The DS1816 provides the functions of detecting out-of-tolerance power supply conditions and warning a processor-based system of impending power failure. When V www.DataSheet4U.com signal is asserted. On power-up, reached the selected tolerance. This allows the power supply and microprocessor to stabilize before is released. BLOCK DIAGRAM (OPEN-DRAIN OUTPUT) Figure 1 ...

Page 3

... TIMING DIAGRAM: POWER-UP Figure 3 www.DataSheet4U.com TIMING DIAGRAM: POWER-DOWN Figure DS1816 ...

Page 4

... PARAMETER Supply Voltage DC ELECTRICAL CHARACTERISTICS PARAMETER Output Current @ 0.4 V Operating Current V < 5. Trip Point (DS1816- Trip Point (DS1816-10 Trip Point (DS1816-15) CC Internal Pull-Up Resistor Output Capacitance AC ELECTRICAL CHARACTERISTICS PARAMETER RESET Active Time V Detect to RST CC V Slew Rate CC (V (MAX ...

Page 5

... PART MARKING CODES “A”, “B”, &“C” represent the device type. 810 . . . . DS1810 811 . . . . DS1811 812 . . . . DS1812 813 . . . . DS1813 815 . . . . DS1815 816 . . . . DS1816 817 . . . . DS1817 818 . . . . DS1818 3.3V. and the associated output load conditions. P and should not be considered a requirement RPD “ ...

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