DS1231S-500/T&R Maxim Integrated, DS1231S-500/T&R Datasheet - Page 6

• 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

APPLICATION WITH MODE PIN GROUNDED Figure 6
NOTE: RST requires a pull–up resister.
AC VOLTAGE MONITOR WITH OPTO-ISOLATION Figure 7
NOTE: RST requires a pull–up resister.
DS1231/S
022698 6/9
AC LINE
INPUT
VOLTAGE SENSE POINT (TRIP VALUE)
CTR
EXAMPLE:
THEN 105
IF
VOLTAGE SENSE POINT
IC
IF
R1
VZ
CTR
100
IC
CTR = 0.2 IC = 30 A IF = 150 A
VOLTAGE SENSE POINT = 105 AND
VZ = 100 VOLTS
ZENNER VOLTAGE
CURRENT TRANSFER RATIO
0.2
30
x R1
IN
MODE
TOL
GND
IN
MODE
TOL
GND
DS1231
R1
DS1231
RST
RST
V
NMI
CC
33K
RST
RST
VZ
V
NMI
CC
-5% V
-5% V
CTR
CC
IC
THRESHOLD
+5V
CC
X R1
+5V
DC
THRESHOLD
DC
TO
TO
P
P