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FEATURES
§ Automatically restarts a microprocessor after
power failure
§ Maintains reset for 150ms after V
CC
returns 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 3V systems
§ Low-cost TO-92 or space saving SOT-23
packages available
§ Efficient open-drain output with internal
5kW pull-up resistor
§ Operating temperature -40°C to +85°C
PIN ASSIGNMENT
PIN DESCRIPTION
TO-92
1 RST Active Low Reset Output
2 V
CC
Power Supply
3 GND Ground
SOT-23
1 RST Active Low Reset Output
2 V
CC
Power Supply
3 GND Ground
DESCRIPTION
The DS1816 EconoReset uses a precision temperature reference and comparator circuit to monitor the
status of the power supply (V
CC
). When an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces reset to the active state. When V
CC
returns to an in-tolerance condition,
the reset signal is kept in the active state for approximately 150ms to allow the power supply and
processor to stabilize.
DS1816
3.3V EconoReset with
Open Drain Output
www.maxim-ic.com
12
TOP VIEW
SOT-23 PACKAGE
See Mech.
Drawings Section
On Website
1 2 3
1 2 3
BOTTOM VIEW
TO-92 PACKAGE
See Mech.
Drawings Section
On Website
DALLAS
DS1816
Econo
Reset
