MAX801L, MAX801M, MAX801N, MAX808L, MAX808M, MAX808N 8引脚微处理器监控电路，提供±1.5%的复位门限精度

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精度为1.5%的复位IC，提供电池备份功能

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概述

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The MAX801/MAX808 microprocessor (µP) supervisory circuits monitor and control the activities of +5V µPs by providing backup-battery switchover, low-line indication, and µP reset. Additional features include a watchdog for the MAX801 and CMOS RAM write protection for the MAX808.

The MAX801/MAX808 offer a choice of reset-threshold voltage (denoted by suffix letter): 4.675V (L), 4.575V (N), and 4.425V (M). These devices are available in 8-pin DIP and SO packages.

关键特性 应用/使用

Precision Voltage Monitoring, ±1.5% Reset Accuracy
200ms Power-OK/Reset Time Delay
Active-low RESET Output (MAX808)
RESET and active-low RESET Outputs (MAX801)
Watchdog Timer (MAX801)
On-Board Gating of Chip-Enable Signals (MAX808):

Memory Write-Cycle Completion
3ns CE Gate Propagation Delay

1µA Standby Current
Power Switching:

250mA in V_CC Mode
20mA in Battery-Backup Mode

MaxCap™/SuperCap™ Compatible
Active-low RESET Guaranteed Valid to V_CC = 1V
Low-Line Threshold 52mV Above Reset Threshold
通过美国保险商实验室协会(UL®)认证

计算机：台式机、工作站、服务器
控制器
精确的µP监视
嵌入式系统
智能仪表
便携式电池供电设备

Key Specifications: Battery Backup Circuits

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Active-High Reset Output

Max. I_CC (µA)

Features

RoHS Available

Package

Operating Temp. Range (°C)

Price^**

MAX801

3.3 to 5.5

Push-Pull

110

•	High Accuracy (1%)

•

Low Line

•

Watchdog

Yes

Ceramic DIP/8
PDIP/8
SOIC/8

-40 to +85
-55 to +125
0 to +70

$3.17 @ 1k

MAX808

•	Chip Enable Gate

•	High Accuracy (1%)

•

Low Line

$3.17 @ 1k

See All Battery Backup Circuits (92)

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.

图表

MAX801L,MAX801M,MAX801N,MAX808L,MAX808M,MAX808N:典型工作电路
典型工作电路

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参考文献： 19-1086; Rev. 1; 2006-12-05
本页最后一次更新: 2007-07-18

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