DS1815R-20-U Maxim Integrated, DS1815R-20-U Datasheet - Page 2

• Manufacturer Part Number: DS1815R-20-U
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: DS1815r

Specifications of DS1815R-20-U

• Number Of Voltages Monitored: 1
• Monitored Voltage: 0 V to 5.5 V
• Undervoltage Threshold: 2.47 V
• Overvoltage Threshold: 2.64 V
• Output Type: Active Low, Push-Pull
• 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: 0 V
• Part # Aliases: 90-1815R-U20

OPERATION — POWER MONITOR
The DS1815 provides the functions of detecting out-of-tolerance power supply conditions and warning a
processor-based system of impending power failure. When V
signal is asserted. On power-up,
reached the selected tolerance. This allows the power supply and microprocessor to stabilize before
is released.
BLOCK DIAGRAM (CMOS OUTPUT) Figure 1
APPLICATION EXAMPLE Figure 2
APPLICATION DIAGRAM:
RST
VALID TO 0 VOLTS V
RST
CC
is kept active for approximately 150ms after the power supply has
ON THE DS1815 Figure 3
2 of 5
CC
is detected as out of tolerance, the
DS1815
RST
RST