DS1818R-20-U+ Maxim Integrated, DS1818R-20-U+ Datasheet - Page 3

• 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

ELECTRICAL CHARACTERISTICS (continued)
(V
V
Reset Timeout Period
ADJUSTABLE RESET COMPARATOR INPUT (MAX6719/MAX6720/MAX6723–MAX6727)
RSTIN Input Threshold
RSTIN Input Current
RSTIN Hysteresis
RSTIN to Reset Output Delay
POWER-FAIL INPUT (MAX6728/MAX6729)
PFI Input Threshold
PFI Input Current
PFI Hysteresis
PFI to PFO Delay
MANUAL RESET INPUT (MAX6715–MAX6722/MAX6725–MAX6729)
MR Input Voltage
MR Minimum Pulse Width
MR Glitch Rejection
MR to Reset Delay
MR Pullup Resistance
WATCHDOG INPUT (MAX6721–MAX6729)
Watchdog Timeout Period
WDI Pulse Width
WDI Input Voltage
WDI Input Current
CC
CC
1 = V
to Reset Output Delay
CC
PARAMETER
2 = 0.8V to 5.5V, GND = 0, T
_______________________________________________________________________________________
Dual/Triple Ultra-Low-Voltage SOT23 µP
SYMBOL
t
V
I
RSTIND
V
RSTIN
RSTIN
V
t
t
I
t
I
t
t
t
V
V
DPF
V
WDI
V
WDI
WD
PFI
PFH
MR
RD
RP
PFI
IH
IH
A
IL
IL
= -40°C to +85°C, unless otherwise noted. Typical values are at T
V
V
D1
D2
D3
D5
D6
D4
V
(V
First watchdog period after reset timeout
period
Normal mode
(Note 2)
WDI = 0 or V
C C
C C
RSTIN
PFI
1 = ( V
2 = ( V
+ 30mV) to (V
to (V
TH
TH
1 + 100m V ) to ( V
RSTIN
2 + 75m V ) to ( V
CC
CONDITIONS
1
- 30mV)
PFI
- 30mV)
TH
TH
Supervisory Circuits
2 - 75m V )
1 - 100m V ) or
0.7
0.7
1120
1.12
MIN
140
280
560
611
611
-25
-25
1.1
8.8
25
35
50
-1
1
✕
✕
V
V
CC
CC
1
1
626.5
626.5
1680
TYP
1.65
13.2
1.68
210
420
840
100
200
20
22
50
54
A
3
3
2
= +25°C.) (Note 1)
0.3
0.3
✕
✕
MAX
1120
2240
17.6
2.24
280
560
642
+25
642
+25
2.2
V
V
80
72
+1
CC
CC
1
1
UNITS
mV
mV
mV
mV
ms
kΩ
nA
nA
µA
µs
µs
µs
µs
ns
ns
ns
V
V
s
3