MAX700, MAX701, MAX702 Power-Supply Monitor with Reset

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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 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, 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.

Key Features

Applications/Uses

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

	Automotive Systems
	Computers
	Controllers
	Critical µP Power Monitoring
	Intelligent Instruments

Key Specifications: Supervisors (1 Monitored Voltage)

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Active-High Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX700

1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5

Push-Pull

85ms to 300ms

No Watchdog

Manual Reset

2.5

200

Yes

DICE SALES/0
PDIP/8
SOIC/8

-40 to +85
0 to +70

$2.17 @ 1k

MAX701

3.3 to 5.5

Push-Pull

$1.96 @ 1k

MAX702

3.3 to 5.5

$2.17 @ 1k

See All Supervisors (1 Monitored Voltage) (268)

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.