MAX700 Просмотр технического описания (PDF) - Maxim Integrated
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MAX700 Datasheet PDF : 6 Pages
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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.
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 select-
ed, and adjustable hysteresis. All parts are supplied in
8-pin PDIP and narrow-SO packages in commercial and
extended temperature ranges.
Applications
●● Computers
●● Controllers
●● Intelligent Instruments
●● Critical µP Power Monitoring
Pin Configurations
Features
●● Min 200ms RESET Pulse on Power-Up, Power-
Down, 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*
MAX700C/D
TEMP RANGE
0°C to +70°C
PIN-PACKAGE
Dice
MAX700CPA
0°C to +70°C
8 PDIP
MAX700CSA
MAX700EPA
0°C to +70°C
-40°C to +85°C
8 Narrow SO
8 PDIP
MAX700ESA
-40°C to +85°C
8 Narrow SO
MAX701C/D
MAX701CPA
0°C to +70°C
0°C to +70°C
Dice
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
MAX702C/D
MAX702CPA
0°C to +70°C
0°C to +70°C
Dice
8 PDIP
MAX702CSA
0°C to +70°C
8 Narrow SO
MAX702EPA
-40°C to +85°C
8 PDIP
MAX702ESA
-40°C to +85°C
8 Narrow SO
*Devices in PDIP and SO packages are available in both lead-
ed and lead(Pb)-free packaging. Specify lead free by adding
the + symbol at the end of the part number when ordering.
TOP VIEW
MR 1
SENSE 2
HYST 3
GND 4
MAX700
8 VCC
7 CTL
6 RESET
5 RESET
MR 1
N.C. 2
N.C. 3
GND 4
MAX701
8 VCC
7 N.C.
6 RESET
5 RESET
MR 1
VCC 2
GND 3
N.C. 4
MAX702
8 N.C.
7 RESET
6 N.C.
5 N.C.
DIP/SO
DIP/SO
DIP/SO
19-2690; Rev 3; 5/14
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