MAX6351, MAX6352, MAX6353, MAX6354, MAX6355, MAX6356, MAX6357, MAX6358, MAX6359, MAX6360 Dual/Triple-Voltage µP Supervisory Circuits

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The MAX6351-MAX6360 microprocessor (µP) supervisors with multiple reset voltages significantly improve system reliability and accuracy compared to separate ICs or discrete components. If any input supply voltage drops below its associated preset threshold, all reset outputs are asserted. In addition, the outputs are valid as long as either input supply voltage remains greater than +1.0V.

All devices in this series have an active-low debounced manual reset input. In addition, the MAX6358/MAX6359/MAX6360 offer a watchdog-timer input with a 46.4s startup timeout period and a 2.9s timeout period. The MAX6355/MAX6356/MAX6357 offer an additional voltage monitor input to monitor a third voltage.

The MAX6351 features two active-low, push-pull reset outputs, one is referenced to V_CC1 and the other is referenced to V_CC2. The MAX6353/MAX6356/MAX6359 offer an active-low, push-pull reset output referenced to V_CC1. The MAX6354/MAX6357/MAX6360 offer an active-low, push-pull reset output referenced to V_CC2.

All these devices are offered with a wide variety of voltage threshold levels, as shown in the Voltage Threshold Levels table. They are available in 5- and 6-pin SOT23 packages and operate over the extended (-40°C to +85°C) temperature range.

Key Features

Applications/Uses

Precision Monitoring of Multiple +1.8V, +2.5V, +3.0V, +3.3V, and +5V Power-Supply Voltages
Precision Factory-Set Power-Supply Reset Thresholds
20µA Supply Current
100ms min Power-On Reset Pulse Width
Debounced TTL/CMOS-Compatible Manual-Reset Input
Watchdog Timer
- 46.4s Startup Timeout
- 2.9s Normal Timeout
Fully Guaranteed Over Temperature
Guaranteed RESET-bar Valid to V_CC1 = 1V or V_CC2 = 1V
Power-Supply Transient Immunity
No External Components for Dual-Voltage Systems
Small 5- and 6-Pin SOT23 Packages
Low Cost

	Computers
	Controllers
	Intelligent Instruments
	Multivoltage Systems Equipment
	Portable Battery-Powered

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Interface

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Nom. Watchdog Timeout Range

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

Price^**

MAX6351

Factory Fixed

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

1.5

$1.38 @ 1k

MAX6352

Open Drain

No Watchdog

$1.38 @ 1k

MAX6353

Push-Pull

No Watchdog

$1.38 @ 1k

MAX6354

Push-Pull

No Watchdog

$1.38 @ 1k

MAX6358

Open Drain

Input (WDI)
Extended Setup Period

1s to 2s
>2s

$1.38 @ 1k

MAX6359

Push-Pull

Input (WDI)
Extended Setup Period

1s to 2s
>2s

$1.38 @ 1k

MAX6360

Push-Pull

Input (WDI)
Extended Setup Period

1s to 2s
>2s

$1.38 @ 1k

See All Supervisors (2 Monitored Voltages) (70)

Key Specifications: Supervisors (3 Monitored Voltages)

Part Number

Interface

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

Price^**

MAX6355

Factory Fixed
R/C Adjustable

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

Open Drain

85ms to 300ms

No Watchdog

Adjustable Reset Input
Manual Reset

1.5

$1.38 @ 1k

MAX6356

Push-Pull

$1.38 @ 1k

MAX6357

Push-Pull

$1.38 @ 1k

See All Supervisors (3 Monitored Voltages) (21)

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.