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The ADM709LAN contains a power supply monitor which generates a system reset during power-up, power-down and brownout conditions. When VCC falls below the reset threshold, RESET goes low and holds the µP in reset. On power-up the RESET output is held low for 140 ms after VCC rises above the threshold. The RESET output remains operational with VCC as low as 1 V.
Three supply-voltage threshold levels are available suitable for +5 V, +3.3 V and for +3 V supply monitoring. The actual reset voltage threshold is found in the data sheet.
The ADM709LAN is available in 8-pin DIP and SOIC packages.
Precision Supply Voltage Monitor
+5 V, +3.3 V, +3 V Power Supply Monitor
35 µA Quiescent Current
140 ms (min) Power-On Reset Pulse
Low Cost
8-Pin DIP/SO Packages
Upgrade for MAX709
Number of Voltages Monitored
1
Monitored Voltage
3 V, 3.3 V, 5 V
Undervoltage Threshold
4.5 V
Overvoltage Threshold
4.75 V
Output Type
Push-Pull
Manual Reset
Not Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Power Up Reset Delay (Typ)
380 ms
Supply Voltage Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Package / Case
PDIP-8
Packaging
Tube
Chip Enable Signals
No
Maximum Power Dissipation
727 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Series
ADM709
Factory Pack Quantity
50
Supply Current (Typ)
200 uA
Supply Voltage Min
2.7 V
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 