MAX6301, MAX6302, MAX6303, MAX6304 +5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/Watchdog

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Description

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The MAX6301–MAX6304* low-power microprocessor (µP) supervisory circuits provide maximum adjustability for reset and watchdog functions. The reset threshold can be adjusted to any voltage above 1.22V, using external resistors. In addition, the reset and watchdog timeout periods are adjustable using external capacitors. A watchdog select pin extends the watchdog timeout period to 500x. The reset function features immunity to power-supply transients.

These four devices differ only in the structure of their reset outputs (see the Selector Guide in the full data sheet). The MAX6301–MAX6304 are available in the space-saving 8-pin µMAX® package, as well as 8-pin PDIP and SO packages.

Key Features

Applications/Uses

Adjustable Reset Threshold
Adjustable Reset Timeout
Adjustable Watchdog Timeout
500x Watchdog Timeout Multiplier
4µA Supply Current
RESET or Active-Low RESET Output Options
Push-Pull or Open-Drain Output Options
Guaranteed Active-Low RESET Asserted At or Above V_CC = 1V (MAX6301/MAX6303)
Power-Supply Transient Immunity
Watchdog Function can be Disabled
PDIP/SO/µMAX Packages Available

	Battery-Powered Computers/Controllers
	Computers: Desktop, Workstation, Server
	Critical µP Monitoring
	Embedded Controllers
	Intelligent Instruments
	Medical Equipment
	Portable Equipment
	Set-Top Boxes

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

Nom. Watchdog Timeout Range

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Package

Operating Temp. Range (°C)

Price^**

MAX6301

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

Open Drain

15ms to 85ms
1ms to 15ms
300ms to 1s
85ms to 300ms
<1ms
>1s
Adjustable

Input (WDI)
Cap Adjustable

1s to 2s
<1s
>2s
Adjustable

Yes

PDIP/8
SOIC/8
uMAX/8

-40 to +85
0 to +70

$1.51 @ 1k

MAX6302

Open Drain

$1.51 @ 1k

MAX6303

Push-Pull

$1.51 @ 1k

MAX6304

Push-Pull

$1.51 @ 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.