DS1818R-20-U+ Maxim Integrated, DS1818R-20-U+ Datasheet - Page 15

• 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

Table 1. Reset Voltage Threshold Suffix
Guide**
**Standard versions are shown in bold and are available in a D3
timeout option only. Standard versions require 2,500 piece order
increments and are typically held in sample stock. There is a
10,000 order increment on nonstandard versions. Other thresh-
old voltages may be available, contact factory for availability.
PART NUMBER
SUFFIX
(_ _)
WG
MR
ZW
WE
MS
SY
TW
SV
RV
SH
RH
TG
SD
RD
YH
ZG
YD
VH
VD
LT
RY
RF
YV
ZE
TZ
SF
TE
YF
WI
VF
TI
ZI
______________________________________________________________________________________
Dual/Triple Ultra-Low-Voltage SOT23 µP
THRESHOLD (V)
V
CC
VOLTAGE
1 NOMINAL
4.625
2.925
2.925
2.625
2.925
3.075
2.925
2.313
2.188
2.313
2.188
1.575
1.665
1.575
4.375
4.375
3.075
2.625
3.075
3.075
2.625
2.925
2.625
3.075
2.625
2.188
2.313
2.188
2.313
1.665
1.575
1.665
THRESHOLD (V)
V
CC
VOLTAGE
2 NOMINAL
3.075
2.188
1.575
1.575
1.313
1.110
0.788
1.665
1.313
1.110
0.788
1.313
1.110
0.788
2.925
2.625
2.313
2.188
1.665
1.388
1.313
1.050
1.050
0.833
0.788
1.575
1.388
1.050
0.833
1.388
1.050
0.833
Table 2. Reset Timeout Period Suffix
Guide
PERIOD SUFFIX
TIMEOUT
Supervisory Circuits
D1
D2
D3
D5
D6
D4
MIN [ms]
ACTIVE TIMEOUT PERIOD
1120
140
280
560
1.1
8.8
MAX [ms]
1120
2240
17.6
280
560
2.2
15