MAX6821ZUK-T

更新时间： 2024-11-22 22:55:15

品牌	Logo	应用领域
美信 - MAXIM		微处理器监控
页数	文件大小	规格书
9页	167K
描述
Low-Voltage SOT23 レP Supervisors with Manual Reset and Watchdog Timer

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MAX6821ZUK-T 数据手册

19-1868; Rev 1; 1/01

Low-Voltage SOT23 µP Supervisors with

Manual Reset and Watchdog Timer

General Description

Features

The MAX6821–MAX6825 are low-voltage microprocessor

(µP) supervisory circuits that combine voltage monitor-

ing, watchdog timer, and manual reset input functions in

a 5-pin SOT23 package. Microprocessor supervisory cir-

cuits significantly improve system reliability and accura-

cy compared to separate ICs or discrete components.

These devices assert a reset signal whenever the moni-

tored voltage drops below its preset threshold, keeping it

o Monitors +1.8V, +2.5V, +3.0V, +3.3V, +5.0V

Supplies

o 140ms (min) Reset Timeout Delay

o 1.6s Watchdog Timeout Period

(MAX6821/MAX6822/MAX6823/MAX6824)

o Manual Reset Input

(MAX6821/MAX6822/MAX6823/MAX6825)

o Three Reset Output Options

asserted for a minimum timeout period after V

rises

above the threshold. In addition, a watchdog timer moni-

tors against code execution errors. A debounced manual

reset is also available. The MAX6821–MAX6825 monitor

voltages from +1.8V to +5.0V. These outputs are guaran-

Push-Pull RESET

Open-Drain RESET

teed to be in the correct state for V

down to +1.0V.

o Guaranteed Reset Valid to V

o Immune to Short Negative V

o No External Components

= +1.0V

Nine preprogrammed reset threshold voltages are

available (see Threshold Suffix Guide). The MAX6821,

MAX6822, and MAX6823 all have a manual reset input

and a watchdog timer. The MAX6821 has push-pull

RESET, the MAX6822 has open-drain RESET, and the

MAX6823 has push-pull RESET. The MAX6824 has a

watchdog timer and both push-pull RESET and push-

pull RESET. The MAX6825 has a manual reset input

and both push-pull RESET and push-pull RESET. The

Selector Guide explains the functions offered in this

series of parts.

Transients

o Small 5-Pin SOT23 Packages

Ordering Information

PART

TEMP. RANGE

-40°C to +125°C

PIN-PACKAGE

5 SOT23-5

MAX6821_UK-T

MAX6822_UK-T

MAX6823_UK-T

MAX6824_UK-T

MAX6825_UK-T

________________________Applications

*Insert the desired suffix letter (from the table below) into the blank

to complete the part number.

Set-Top Boxes

Automotive Systems

Critical µP Monitoring

Computers and

Controllers

Portable/Battery-

Powered Equipment

Threshold Suffix Guide

Embedded Controllers

Intelligent Instruments

RESET

SUFFIX

THRESHOLD (V)

Pin Configurations

4.63

4.38

3.08

2.93

2.63

2.32

2.19

1.67

1.58

TOP VIEW

RESET(RESET)

MAX6821

MAX6822

MAX6823

GND

WDI

SOT23-5

Note: Bold indicates standard versions. Samples are typically

available for standard versions only. All parts require a 2.5k

minimum order increment. Contact factory for availability.

(RESET) MAX6821 ONLY

Pin Configurations continued at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

Selector Guide appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...9

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与MAX6821ZUK-T相关器件

型号	品牌	获取价格	描述	数据表
MAX6822	MAXIM	获取价格	Low-Voltage SOT23 レP Supervisors with Manual
MAX6822	ADI	获取价格	低电压、SOT23封装、微处理器监控电路，带有手动复位及看门狗定时器
MAX6822LUK	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO5
MAX6822LUK+	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO5,
MAX6822LUK+T	MAXIM	获取价格	Power Supply Management Circuit, Adjustable, 1 Channel, BICMOS, PDSO5, LEAD FREE, SOT-23,
MAX6822LUK-T	MAXIM	获取价格	Low-Voltage SOT23 レP Supervisors with Manual
MAX6822MUK	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO5
MAX6822MUK+	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO5,
MAX6822MUK+T	MAXIM	获取价格	Power Supply Management Circuit, Adjustable, 1 Channel, BICMOS, PDSO5, LEAD FREE, SOT-23,
MAX6822MUK-T	MAXIM	获取价格	Low-Voltage SOT23 レP Supervisors with Manual

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