MAX708MJA/883B Maxim Integrated Products, MAX708MJA/883B Datasheet - Page 8
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MAX708MJA/883B
Manufacturer Part Number
MAX708MJA/883B
Description
Supervisory Circuits Single uPower Supervisor
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX544BCSA.pdf
(12 pages)
Specifications of MAX708MJA/883B
Number Of Voltages Monitored
1
Monitored Voltage
4.4 V
Output Type
Active High, Active Low, Push-Pull
Manual Reset
Resettable
Watchdog
No Watchdog
Battery Backup Switching
No Backup
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.2 V
Supply Current (typ)
500 uA
Maximum Power Dissipation
640 mW
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
Package / Case
CDIP N
Minimum Operating Temperature
- 55 C
Power Fail Detection
Yes
Undervoltage Threshold
4.25 V
Overvoltage Threshold
4.5 V
Power-up Reset Delay (typ)
280 ms
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX708MJA/883B
Manufacturer:
MAXIM
Quantity:
1 240
Low-Cost, µP Supervisory Circuits
Figure 5. RESET Valid to Ground Circuit
Figure 7. Monitoring a Negative Voltage
8
_______________________________________________________________________________________
+5V
V-
PFO
MR
+5V
+5V
R1
R2
0V
0V
5 1.25
−
R1
MAX70_
=
1.25
RESET
V-
PFI
−
R2
V TRIP
MAX70_
GND
V
CC
V
RESET
TRIP
, V TRIP
PFO
MR
R1
<
100kΩ
0
0V
2N3904
TO µP
100kΩ
µPs with bidirectional reset pins, such as the Motorola
68HC11 series, can contend with the MAX705-MAX708
RESET output. If, for example, the RESET output is driven
high and the µP wants to pull it low, indeterminate logic
levels may result. To correct this, connect a 4.7kΩ
resistor between the RESET output and the µP reset I/O,
as in Figure 8. Buffer the RESET output to other system
components.
Figure 6. Monitoring Both +5V and +12V
Figure 8. Interfacing to µPs with Bidirectional Reset I/O
130kΩ
1MΩ
1%
1%
MAX70_
GND
V
+12V
+12V Reset
Threshold at +25°C
CC
PARAMETER
RESET
+5V
BUFFERED RESET TO OTHER SYSTEM COMPONENTS
4.7kΩ
PFI
V
Bidirectional Reset Pins
CC
MIN
10.67
Interfacing to µPs with
MAX70_
GND
TYP
10.87
RESET
PFO
MR
RESET
MAX
11.50
GND
V
µP
CC
UNIT
V
TO µP