DS1818-5+T&R Maxim Integrated Products, DS1818-5+T&R Datasheet

IC ECONRST 3.3V W/PB 5% TO92-3

DS1818-5+T&R

Manufacturer Part Number
DS1818-5+T&R
Description
IC ECONRST 3.3V W/PB 5% TO92-3
Manufacturer
Maxim Integrated Products
Series
EconoResetr
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of DS1818-5+T&R

Number Of Voltages Monitored
1
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
100 ms Minimum
Voltage - Threshold
3.06V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
TO-92-3 (Standard Body), TO-226
Monitored Voltage
1 V to 5.5 V
Undervoltage Threshold
2.98 V
Overvoltage Threshold
3.15 V
Output Type
Active Low, Open Drain
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
250 ms
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1 V
Supply Current (typ)
35 uA
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Power Fail Detection
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
§ Automatically restarts a microprocessor after
§ Monitors pushbutton for external override
§ Maintains reset for 150 ms after V
§ Reduces need for discrete components
§ Precision temperature-compensated voltage
§ Accurate 5%, 10% or 20% power monitoring
§ Low-cost TO-92 or space saving surface
§ Efficient open-drain output with internal
§ Operating temperature -40°C to +85°C
DESCRIPTION
The DS1818 EconoReset uses a precision temperature-compensated reference and comparator circuit to
monitor the status of the power supply (V
power-fail signal is generated which forces reset to the active state. When V
condition, the reset signal is kept in the active state for approximately 150 ms to allow the power supply
and processor to stabilize.
The DS1818 also monitors a pushbutton on the reset output. If the reset line is pulled low, a reset is
generated upon release and the DS1818 output will be held in reset output low for typically 150 ms.
www.maxim-ic.com
power failure
to an in-tolerance condition
reference and voltage sensor
mount SOT-23 packages available
5.5 kW pull-up resistor
CC
returns
CC
). When an out-of-tolerance condition is detected, an internal
3.3V EconoReset with Pushbutton
1 of 5
PIN ASSIGNMENT
PIN DESCRIPTION
TO-92
1
2
3
SOT-23
1
2
3
TO-92 PACKAGE
Drawings Section
BOTTOM VIEW
On Website
See Mech.
V
GND
V
GND
DALLAS
1 2 3
1 2 3
DS1818
RST
RST
Econo
Reset
CC
CC
Active Low Reset Output
Power Supply
Ground
Active Low Reset Output
Power Supply
Ground
SOT-23 PACKAGE
Drawings Section
CC
1
TOP VIEW
On Website
See Mech.
returns to an in-tolerance
3
2
DS1818
041002

Related parts for DS1818-5+T&R

DS1818-5+T&R Summary of contents

Page 1

... The DS1818 also monitors a pushbutton on the reset output. If the reset line is pulled low, a reset is generated upon release and the DS1818 output will be held in reset output low for typically 150 ms. ...

Page 2

... BLOCK DIAGRAM (OPEN-DRAIN OUTPUT) Figure 1 APPLICATION EXAMPLE Figure 2 OPERATION - PUSHBUTTON RESET The DS1818 provides a pushbutton switch for manual reset control. When the DS1818 is not in a reset cycle, a pushbutton reset can be generated by pulling the pushbutton is held low, the RST the pushbutton is released. See Figure 2 for an application example and Figure 3 for the timing diagram. ...

Page 3

... TIMING DIAGRAM: POWER-UP Figure 4 TIMING DIAGRAM: POWER-DOWN Figure DS1818 ...

Page 4

... DC ELECTRICAL CHARACTERISTICS PARAMETER Output Current @ 0.4 V Voltage Input Low Voltage Input High Operating Current V < 5. Trip Point (DS1818- Trip Point (DS1818-10 Trip Point (DS1818-20) 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

... 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 for RPD “D” represents the device tolerance 10 15 20% DS1818 ...

Related keywords