DS1231S-500/T&R Maxim Integrated, DS1231S-500/T&R Datasheet - Page 4

• Manufacturer Part Number: DS1231S-500/T&R
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: DS1231r

Specifications of DS1231S-500/T&R

• Number Of Voltages Monitored: 1
• Monitored Voltage: 4.5 V to 5.5 V
• Undervoltage Threshold: 4.5 V
• Overvoltage Threshold: 4.74 V
• Output Type: Active High, Active Low, Open Drain
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-16 Wide
• Chip Enable Signals: No
• Minimum Operating Temperature: 0 C
• Power Fail Detection: Yes
• Supply Current (typ): 2000 uA
• Supply Voltage - Min: 4.5 V
• Part # Aliases: 90-1231S-5TR

INPUT PIN HYSTERESIS Figure 3
APPLICATION WITH MODE PIN CONNECTED TO V
NOTE: RST requires a pull–up resister.
DS1231/S
022698 4/9
V
V
NMI
V
NMI
V
OH
OH
OL
OL
MODE = GND, V
MODE = V
CC
V SENSE
EXAMPLE: V SENSE = 8 VOLTS AT TRIP POINT AND A
THEN 8
, V
V
V
TP-
TP-
CC
CC
= +5V
= +5V
R1
R2
V
V
MAXIMUM VOLTAGE OF 17.5V WITH R2 = 10K
R1
TP
TP
R1
+
+
10K
R2
VOLTAGE SENSE POINT
+5V
10K
R2
V
V
IN
IN
X 2.3
(-5% V
X 2.3
CC
IN
MODE
TOL
GND
THRESHOLD)
DS1231
CC
V MAX
R1 = 25K
Figure 4
RST
RST
V
NMI
NOTE: HYSTERESIS TOLERANCE IS +60 mV
CC
V
V
TP
TP-
+
V SENSE
VTP
+5V
–20
2.3
2.5
X 5.0
2.15
–35
2.5
TO
P
–50
2.0
2.5