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MAX6301, MAX6302, MAX6303, MAX6304

+5V, Low-Power, µP Supervisory Circuits with Adjustable Reset/Watchdog

Overview

Status

Active: In Production.

Description

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.

Data Sheet

Download	Rev 4	(PDF, 168kB)
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Key Features

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

Applications/Uses

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 Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Reset Thresh. Accur.
(%)

I_CC
(µA)

Budgetary
Price

min

@ +25°C

max

See Notes

MAX6301

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

Active Low

Open Drain

1ms to 15ms

15ms to 85ms

85ms to 300ms

300ms to 1s

<1ms

>1s

Adjustable

Cap Adjustable

Input (WDI)

1s to 2s

<1s

>2s

Adjustable

$2.36 @1k

MAX6302

Active High

Open Drain

$2.44 @1k

MAX6303

Active Low

Push-Pull

$2.36 @1k

MAX6304

Active High

Push-Pull

$1.67 @1k

See All Supervisors (1 Monitored Voltage) (275)

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.

Diagram

Typical Operating Circuit

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Information Index

Overview		Design Resources		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Technical Documents Evaluation Kits Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1078 Rev 4; 2010-09-16
This page last modified: 2010-12-13