MAX700/MAX701/MAX702
Power-Supply Monitor with Reset
General Description
The MAX700/MAX701/MAX702 are supervisory circuits
used to monitor the power supplies in microprocessor
(µP) and digital systems. The RESET/RESET outputs of
the MAX700/MAX701/MAX702 are guaranteed to be in
the correct state for VCC voltages down to +1V (Figure 4).
They provide excellent circuit reliability and low cost by
eliminating external components and adjustments when
used with +5V-powered circuits.
The MAX702 is the simplest part in the family. When
VCC falls to 4.65V, RESET goes low. The MAX702 also
provides a debounced manual-reset input. The MAX701
performs the same functions but has both RESET and
RESET outputs. Their primary function is to provide a
system reset. Accordingly, an active reset signal is
supplied for low supply voltages and for at least 200ms
after the supply voltage reaches its operating value.
●● Min 200ms RESET Pulse on Power-Up, PowerDown, and During Low-Voltage Conditions
●● Reset Threshold Factory Trimmed for +5V Systems
●● No External Components or Adjustments with
+5V-Powered Circuits
●● Debounced Manual-Reset Input
●● Preset or Adjustable-Voltage Detection (MAX700)
●● Adjustable Hysteresis (MAX700)
●● 8-Pin PDIP and Narrow-SO Packages
Ordering Information
PART*
TEMP RANGE
PIN-PACKAGE
MAX700CPA
0°C to +70°C
8 PDIP
MAX700CSA
0°C to +70°C
8 Narrow SO
MAX700EPA
-40°C to +85°C
8 PDIP
MAX700ESA
-40°C to +85°C
8 Narrow SO
MAX701C/D
0°C to +70°C
MAX701CPA
0°C to +70°C
8 PDIP
MAX701CSA
0°C to +70°C
8 Narrow SO
MAX701EPA
-40°C to +85°C
8 PDIP
MAX701ESA
-40°C to +85°C
8 Narrow SO
0°C to +70°C
Dice
0°C to +70°C
8 PDIP
MAX702CSA
0°C to +70°C
8 Narrow SO
MAX702EPA
Computers
Controllers
Intelligent Instruments
Critical µP Power Monitoring
0°C to +70°C
MAX702CPA
Applications
MAX700C/D
MAX702C/D
In addition to the features of the MAX701 and MAX702,
the MAX700 provides preset or adjustable-voltage
detection so thresholds other than 4.65V can be selected, and adjustable hysteresis. All parts are supplied in
8-pin PDIP and narrow-SO packages in commercial and
extended temperature ranges.
●●
●●
●●
●●
Features
-40°C to +85°C
Dice
Dice
8 PDIP
MAX702ESA
-40°C to +85°C
8 Narrow SO
*Devices in PDIP and SO packages are available in both leaded and lead(Pb)-free packaging. Specify lead free by adding
the + symbol at the end of the part number when ordering.
Pin Configurations
TOP VIEW
1
8
VCC
MR 1
7
N.C.
VCC 2
3
6
RESET
GND
GND 4
5
RESET
8
VCC
MR 1
7
CTL
N.C. 2
3
6
RESET
N.C.
GND 4
5
RESET
MR
SENSE 2
HYST
MAX700
DIP/SO
19-2690; Rev 3; 5/14
MAX701
DIP/SO
8
N.C.
7
RESET
3
6
N.C.
N.C. 4
5
N.C.
MAX702
DIP/SO