DS1818R-5/T&R Maxim Integrated Products, DS1818R-5/T&R Datasheet - Page 2

• Manufacturer Part Number: DS1818R-5/T&R
• Description: IC ECONRST 3.3V W/PB 5% SOT23-3
• Manufacturer: Maxim Integrated Products
• Series: EconoResetr
• Type: Simple Reset/Power-On Resetr

Specifications of DS1818R-5/T&R

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 100 ms Minimum
• Voltage - Threshold: 3.06V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

OPERATION - POWER MONITOR
The DS1818 provides the functions of detecting out-of-tolerance power supply conditions and warning a
processor-based system of impending power failures. 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 (OPEN-DRAIN OUTPUT) Figure 1
APPLICATION EXAMPLE Figure 2
OPERATION - PUSHBUTTON RESET
The DS1818 provides a pushbutton switch for manual reset control. When the DS1818 is not in a reset
cycle, a pushbutton reset can be generated by pulling the
pushbutton is held low, the
the pushbutton is released. See Figure 2 for an application example and Figure 3 for the timing diagram.
TIMING DIAGRAM: PUSHBUTTON RESET Figure 3
RST
RST
is forced active low and will remain active low for about 150 ms after
is kept active for approximately 150 ms after the power supply has
2 of 5
RST
CC
is detected as out-of-tolerance, the
pin low for at least 1 ms. When the
DS1818
RST
RST