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MAX801L, MAX801M, MAX801N

8引脚微处理器监控电路,提供±1.5%的复位门限精度

精度为1.5%的复位IC,提供电池备份功能

产品详情

主要特征

应用/用途

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 4.0 to 4.5
4.5 to 5.0
Reset Out Active High
Active Low
Push-Pull
ICC (µA) (max) 110
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
5.04
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技术文档

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参量

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 4.0 to 4.5
4.5 to 5.0
Reset Out Active High
Active Low
Push-Pull
ICC (µA) (max) 110
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
5.04

主要特征

  • 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 VCC Mode
    • 20mA in Battery-Backup Mode
  • MaxCap™/SuperCap™ Compatible
  • Active-low RESET Guaranteed Valid to VCC = 1V
  • Low-Line Threshold 52mV Above Reset Threshold

应用/用途

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

描述

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.

简化框图

MAX801L、MAX801M、MAX801N、MAX808L、MAX808M、MAX808N:典型工作电路 MAX801L、MAX801M、MAX801N、MAX808L、MAX808M、MAX808N:典型工作电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心