DS1834A+ Maxim Integrated Products, DS1834A+ Datasheet - Page 2
![IC ECONORST DUAL LO OPN-DR 8-DIP](/photos/1/39/13900/175-8-dip_sml.jpg)
DS1834A+
Manufacturer Part Number
DS1834A+
Description
IC ECONORST DUAL LO OPN-DR 8-DIP
Manufacturer
Maxim Integrated Products
Series
EconoResetr
Type
Multi-Voltage Supervisorr
Datasheet
1.DS1834AUTR.pdf
(7 pages)
Specifications of DS1834A+
Number Of Voltages Monitored
2
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
200 ms Minimum
Voltage - Threshold
3.3V, 5V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Monitored Voltage
3.3 V, 5 V
Undervoltage Threshold
4.5 V, 2.8 V
Overvoltage Threshold
2.97 V, 4.75 V
Output Type
Active Low, Open Drain
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
500 ms
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.2 V
Supply Current (typ)
50 uA
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Power Fail Detection
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
DS1834/A/D
OPERATION
Power Monitor
The DS1834 provides the functions of detecting out-of-tolerance conditions on a 3.3-volt and 5-volt
power supply and warning a processor-based system of impending power failure. When an input is
detected as out of tolerance on either voltage input the RST for that supply will be forced active. When
that input returns to a valid state the RST will remain active for about 350 ms and then return to an
inactive state until the next input out-of-tolerance condition.
On power-up both resets are kept active for approximately 350 ms after the power supply inputs have
reached the selected tolerance. This allows the power supply and system power to stabilize before RST is
released.
All internal operating current for the DS1834 will be drawn from the input with the highest voltage level.
The outputs will draw current only from the controlling input (5V IN or 3.3V IN).
DS1834 BLOCK DIAGRAM Figure 1
DS1834A BLOCK DIAGRAM OUTPUT Figure 2
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