MAX700_08 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – Power-Supply Monitor with Reset

19-2690; Rev 2; 12/07
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 V_CC 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
V_CC 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 operat-
ing 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
Automotive Systems
Critical µP Power Monitoring
TOP VIEW
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*
TEMP RANGE
PIN-PACKAGE
MAX700C/D
0°C to +70°C
Dice
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
Dice
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
MAX702C/D
0°C to +70°C
Dice
MAX702CPA
0°C to +70°C
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-free packaging. Specify lead free by adding the +
symbol at the end of the part number when ordering.
Pin Configurations
MR 1
SENSE 2
HYST 3
GND 4
MAX700
8 V_CC
7 CTL
6 RESET
5 RESET
DIP/SO
MR 1
N.C. 2
N.C. 3
GND 4
MAX701
8 V_CC
7 N.C.
6 RESET
5 RESET
DIP/SO
MR 1
V_CC 2
GND 3
N.C. 4
MAX702
8 N.C.
7 RESET
6 N.C.
5 N.C.
DIP/SO
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