Datasheet

1 of 5 REV: 022306
GENERAL DESCRIPTION
The DS1813 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.
The DS1813 also monitors a pushbutton on the
reset output. If the reset line is pulled low, a reset
is generated upon release and will be held in reset
output low for typically 150ms.
FEATURES
 Automatically Restarts a Microprocessor
After Power Failure
 Monitors Pushbutton for External Override
 Maintains Reset for Typically 150ms After
V
CC
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 Surface-
Mount SOT-23 Packages Available
 Efficient Open-Drain Output with Internal
5.5kΩ Pullup Resistor
 -40°C to +85°C Operating Temperature
PIN CONFIGURATIONS
PIN DESCRIPTION
PIN
TO-92 SOT-23
NAME FUNCTION
1 1
RST
Active-Low
Reset Output
2 2 V
CC
Power Supply
3 3 GND Ground
DS1813
5V EconoReset with Pushbutton
www.maxim-ic.com
12
3
TOP VIEW
SOT-23 PACKAGE
See Mech.
Drawings Section
On Website
1 2 3
1 2 3
BOTTOM VIE
W
TO-92 PACKAGE
See Mech.
Drawings Section
On Website
DALLAS
DS1813
Econo
Reset