MAX817LCPA

更新时间： 2024-11-01 23:51:55

品牌	Logo	应用领域
美信 - MAXIM		模拟IC
页数	文件大小	规格书
16页	222K
描述
Analog IC

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数据手册
替代型号

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MAX817LCPA 数据手册

19-0486; Rev 2; 2/00

+5V Microprocessor Supervisory Circuits

General Description

____________________________Features

o Precision Supply-Voltage Monitor:

4.65V (MAX81_L)

The MAX817/MAX818/MAX819 microprocessor (µP)

supervisory circuits simplify power-supply monitoring,

battery control, and chip-enable gating in µP systems

by reducing the number of components required.

These devices are designed for use in +5V-powered

systems. Low supply current (11µA typical) and small

package size make these devices ideal for portable

applications. The MAX817/MAX818/MAX819 are specif-

4.40V (MAX81_M)

o 11µA Quiescent Supply Current

o 200ms Reset Time Delay

o Watchdog Timer with 1.6sec Timeout

(MAX817/MAX818)

ically designed to ignore fast transients on V . Other

o Battery-Backup Power Switching; Battery Voltage

supervisory functions include active-low reset, backup-

battery switchover, watchdog input, battery freshness

seal, and chip-enable gating. The Selector Guide below

lists the specific functions available from each device.

Can Exceed V

o Battery Freshness Seal

o On-Board, 3ns Gating of Chip-Enable Signals

These devices offer two pretrimmed reset threshold volt-

ages for ±5ꢀ or ±1±ꢀ power suppliesꢁ :.45V for the L

versions and :.:±V for the M versions. The MAX817/

MAX818/MAX819 are available in space-saving µMAX

packages, as well as 8-pin DIP/SO.

(MAX818)

o Uncommitted Voltage Monitor for Power-Fail or

Low-Battery Warning (MAX817/MAX819)

o Manual Reset Input (MAX819)

______________Ordering Information

_____________________Selector Guide

†

PART

TEMP. RANGE

±°C to +7±°C

PIN-PACKAGE

8 Plastic DIP

8 SO

MAX817 MAX818 MAX819

FEATURE

MAX817_CPA

MAX817_CSA

MAX817_CUA

L/M

✔

L/M

✔

L/M

✔

Active-Low Reset

8 µMAX

✔

Backup-Battery Switchover

Power-Fail Comparator

Watchdog Input

Ordering Information continued on last page.

✔

—

✔

†

These parts offer a choice of reset threshold voltage. From the

table below, select the suffix corresponding to the desired

threshold and insert it into the blank to complete the part number.

✔

—

✔

Battery Freshness Seal

Manual Reset Input

Chip-Enable Gating

—

✔

—

SUFFIX

RESET THRESHOLD (V)

8-DIP/SO/ 8-DIP/SO/ 8-DIP/SO/

:.45

:.:±

Pin-Package

µMAX

Low-Power, Pin-

Compatible Upgrades forꢁ MAX492A

MAX49±A/

MAX7±3/

MAX7±:

—

_________________Pin Configurations

________________________Applications

Battery-Powered Computers and Controllers

Embedded Controllers

TOP VIEW

BATT

RESET

WDI

OUT

Intelligent Instruments

MAX817

Critical µP Monitoring

GND

PFI

Portable Equipment

PFO

DIP/SO/µMAX

Typical Operating Circuit appears at end of data sheet.

Pin Configurations continued at end of data sheet.

*Patents Pending

________________________________________________________________ Maxim Integrated Products

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...16

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MAX817LCPA 替代型号

型号	品牌	替代类型	描述	数据表
MAX817LEPA+	MAXIM	功能相似	Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDIP8, 0.300 INCH, ROHS COMPLIANT

与MAX817LCPA相关器件

型号	品牌	获取价格	描述	数据表
MAX817LCPA+	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, CMOS, PDIP8, 0.300 INCH, ROHS COMPLIANT
MAX817LCSA	MAXIM	获取价格	Analog IC
MAX817LCSA	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, 0.150 INCH, SOIC-8
MAX817LCSA+T	MAXIM	获取价格	暂无描述
MAX817LCSA-T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO8, 0.150 INCH, SOIC-8
MAX817LCUA	MAXIM	获取价格	Analog IC
MAX817LCUA+	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, 3 X 3 MM, ROHS COMPLIANT, MICRO, SOP-10
MAX817LCUA-T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO8, 3 X 3 MM, MICRO, SOP-10
MAX817LEPA	MAXIM	获取价格	+5V Microprocessor Supervisory Circuits
MAX817LEPA	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8, 0.300 INCH, PLASTIC, DIP-8

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