MAX708SCUA+ Maxim Integrated Products, MAX708SCUA+ Datasheet - Page 8
![IC SUPERVISOR MPU 8-UMAX](/photos/1/39/13936/406-8-msop_sml.jpg)
MAX708SCUA+
Manufacturer Part Number
MAX708SCUA+
Description
IC SUPERVISOR MPU 8-UMAX
Manufacturer
Maxim Integrated Products
Type
Simple Reset/Power-On Resetr
Specifications of MAX708SCUA+
Number Of Voltages Monitored
1
Output
Push-Pull, Push-Pull
Reset
Active High/Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
2.93V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Monitored Voltage
2.93 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 V
Supply Current (typ)
350 uA
Maximum Power Dissipation
362 mW
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Power Fail Detection
Yes
Undervoltage Threshold
2.85 V
Overvoltage Threshold
3 V
Power-up Reset Delay (typ)
280 ms
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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