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MAX700, MAX701, MAX702
Power-Supply Monitor with Reset
Power-On Reset + Manual Reset
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Status
Active: In Production.
Description
The MAX700/MAX701/MAX702 are supervisory circuits
used to monitor the power supplies in microprocessor
(µP) and digital systems. The active-low 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, active-low RESET goes low. The MAX702 also
provides a debounced manual reset input. The
MAX701 performs the same functions but has both
active-low 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 selected,
and adjustable hysteresis. All parts are supplied in
8-pin PDIP and Narrow SO packages in commercial
and extended temperature ranges.
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Data Sheet
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Key Features
- Min 200ms Active-Low 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
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Applications/Uses
- Automotive Systems
- Computers
- Controllers
- Critical µP Power Monitoring
- Intelligent Instruments
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Key Specifications:
| Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
Reset Thresh. Accur.
(%) |
ICC
(µA) |
Budgetary Price |
| min |
@ +25°C |
max |
See Notes |
| MAX700 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 |
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| Active High | | Active Low | | Push-Pull |
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85ms to 300ms |
No Watchdog |
Manual Reset |
2.5 |
200 |
$2.27 @1k |
| MAX701 |
3.3 to 5.5 |
| Active High | | Active Low | | Push-Pull |
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$2.06 @1k |
| MAX702 |
3.3 to 5.5 |
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$2.27 @1k |
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See All Supervisors (1 Monitored Voltage) (274)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Pin Configuration
Notes and Comments
Adjustable voltages and hysteresis (MAX700)
RESET and RESET outputs (MAX701)
Didn't Find What You Need?
Information Index
Document Ref.: 19-2690
Rev 2;
2008-02-26
This page last modified: 2009-11-09
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