Datasheet > MAX812

MAX812

更新时间： 2024-09-25 14:58:27

品牌	Logo	应用领域
亚德诺 - ADI		微处理器
页数	文件大小	规格书
9页	943K
描述
4引脚微处理器电压监测器，带有手动复位输入

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中文翻译

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数据手册

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MAX812 数据手册

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MAX811/MAX812

4-Pin μP Voltage Monitors

with Manual Reset Input

General Description

Beneﬁts and Features

The MAX811/MAX812 are low-power microprocessor

(μP) supervisory circuits used to monitor power supplies

in μP and digital systems. They provide excellent circuit

reliability and low cost by eliminating external compo-

nents and adjustments when used with 5Vpowered or

3V-powered circuits. The MAX811/MAX812 also provide

a debounced manual reset input.

● Integrated Voltage Monitor Increases System

Robustness with Added Manual Reset

• Precision Monitoring of 3V, 3.3V, and 5V

Power-Supply Voltages

• 140ms Min Power-On-Reset Pulse Width

• RESET Output (MAX811), RESET Output

(MAX812)

• Guaranteed Over Temperature

These devices perform a single function: They assert a

• Guaranteed RESET Valid to V

= 1V (MAX811)

reset signal whenever the V

supply voltage falls below

• Power-Supply Transient Immunity

a preset threshold, keeping it asserted for at least 140ms

after V has risen above the reset threshold. The only

● Saves Board Space

• No External Components

• 4-Pin SOT143 Package

difference between the two devices is that the MAX811

has an active-low RESET output (which is guaranteed

to be in the correct state for V

MAX812 has an active-high RESET output. The reset

comparator is designed to ignore fast transients on V

Reset thresholds are available for operation with a variety

of supply voltages.

down to 1V), while the

● Low Power Consumption Simplifies Power-Supply

Requirements

• 6μA Supply Current

Ordering Information

PART*

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

4 SOT143

Low supply current makes the MAX811/MAX812 ideal for

use in portable equipment. The devices come in a 4-pin

SOT143 package.

MAX811_EUS-T

MAX812_EUS-T

4 SOT143

*This part offers a choice of five different reset threshold voltages.

Applications

● Computers

Select the letter corresponding to the desired nominal reset

threshold voltage, and insert it into the blank to complete the

part number.

● Controllers

Devices are available in both leaded and lead(Pb)-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

● Intelligent Instruments

● Critical μP and μC Power Monitoring

● Portable/Battery-Powered Equipment

RESET THRESHOLD

SUFFIX

VOLTAGE (V)

4.63

4.38

3.08

2.93

2.63

Typical Operating Circuit

Pin Conﬁguration

TOP VIEW

GND

MAX811

MAX812

MAX811

MAX812

µP

RESET

INPUT

RESET

(RESET)

(RESET) RESET

GND

SOT143

( ) ARE FOR MAX812

NOTE: SEE PACKAGE INFORMATION FOR MARKING INFORMATION.

PUSHBUTTON

SWITCH

( ) ARE FOR MAX812

19-0411; Rev 6; 5/18

12 3 4 5 6 7...9

中文翻译

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与MAX812相关器件

型号	品牌	获取价格	描述	数据表
MAX812_EUS-T	MAXIM	获取价格	4-Pin レP Voltage Monitors with Manual Reset I
MAX812CUS-T	MAXIM	获取价格	Analog IC
MAX812-EUS-T	MAXIM	获取价格	4-Pin uP Voltage Monitors with Manual Reset Input
MAX812LCUS-T	MAXIM	获取价格	Voltage Detector
MAX812LEUS	MAXIM	获取价格	4-Pin uP Voltage Monitors with Manual Reset Input
MAX812LEUS+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.63VV, PDSO4, LEAD FREE, TO-253, SOT-143
MAX812LEUS-T	MAXIM	获取价格	Voltage Detector
MAX812MCUS-T	MAXIM	获取价格	Voltage Detector
MAX812MEUS	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +4.38VV, PDSO4, SOT-143, 4 PIN
MAX812MEUS-T	MAXIM	获取价格	Voltage Detector

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