DS1818R-20-U+ Maxim Integrated, DS1818R-20-U+ Datasheet - Page 7

• Manufacturer Part Number: DS1818R-20-U+
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: DS1818r

Specifications of DS1818R-20-U+

• Number Of Voltages Monitored: 1
• Monitored Voltage: 1 V to 5.5 V
• Undervoltage Threshold: 2.47 V
• Overvoltage Threshold: 2.64 V
• Output Type: Active Low, Open Drain
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 250 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• Chip Enable Signals: No
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: Yes
• Supply Current (typ): 35 uA
• Supply Voltage - Min: 1 V
• Part # Aliases: 90-1818R+U20

MAX6715/
MAX6716
5
2
3
4
6
MAX6717/
MAX6718
—
2
3
4
5
_______________________________________________________________________________________
Dual/Triple Ultra-Low-Voltage SOT23 µP
MAX6719/
MAX6720
—
2
3
4
6
MAX6721/
MAX6722
—
2
3
4
6
PIN
MAX6723/
MAX6724
—
—
2
4
6
MAX6725/
MAX6726
—
2
5
6
8
MAX6727
Supervisory Circuits
—
2
5
6
8
Pin Description (continued)
MAX6728/
MAX6729
—
2
5
6
8
NAME
RST2
V
V
GND
MR
CC
CC
2
1
Active-Low Reset Output,
Open-Drain or Push-Pull.
RST2 changes from high
to low when V
V
selected reset thresholds
or MR is pulled low. RST2
remains low for the reset
timeout period after
V
device reset thresholds
or MR goes low to high.
Open-drain outputs
require an external pullup
resistor. Push-pull
outputs are referenced to
V
Ground
Active-Low Manual Reset
Input. Internal 50kΩ
pullup to V
to force a reset. Reset
remains active as long as
MR is low and for the
reset timeout period after
MR goes high. Leave
unconnected or connect
to V
Secondary Supply
Voltage Input. Powers the
device when it is above
V
secondary reset
threshold monitor.
Primary Supply Voltage
Input. Powers the device
when it is above V
and input for primary
reset threshold monitor.
CC
CC
CC
CC
CC
2 drops below the
1/V
2.
1 and input for
1 if unused.
FUNCTION
CC
2 exceed the
CC
1. Pull low
CC
1 or
CC
2
7