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MAX817L
电源管理 电路监控、电压监测器及排序器 MAX817L
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MAX817L

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+5V微处理器监控电路

低功耗、小尺寸、微处理器监控电路，带有备份电池切换

可打印的数据手册 订阅

产品详情

请参见参数规范 Battery Backup Circuits

主要特征

请参见参数规范 Battery Backup Circuits
Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 3.3 to 5.5
Reset Out Active Low
Push-Pull
ICC (µA) (max) 60
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes) 		3.07
请参见参数规范 Battery Backup Circuits
缩小

简化框图

Technical Docs

数据资料 +5V微处理器监控电路 Mar 14, 2006

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 。

参量

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 3.3 to 5.5
Reset Out Active Low
Push-Pull
ICC (µA) (max) 60
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes) 		3.07
See parametric specs for Battery Backup Circuits

主要特征

  • Precision Supply-Voltage Monitor:
    • 4.65V (MAX81_L)
    • 4.40V (MAX81_M)
  • 11µA Quiescent Supply Current
  • 200ms Reset Time Delay
  • Watchdog Timer with 1.6sec Timeout (MAX817/MAX818)
  • Battery-Backup Power Switching; Battery Voltage Can Exceed VCC
  • Battery Freshness Seal
  • On-Board, 3ns Gating of Chip-Enable Signals (MAX818)
  • Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning (MAX817/MAX819)
  • Manual Reset Input (MAX819)

应用/用途

  • 电池供电计算机/控制器
  • 精确的µP监控
  • 嵌入式控制器
  • 智能仪表
  • 便携式设备

描述

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 specifically designed to ignore fast transients on VCC. Other supervisory functions include active-low reset, backup-battery switchover, watchdog input, battery freshness seal, and chip-enable gating. The Selector Guide in the full data sheet lists the specific functions available from each device.

These devices offer two pretrimmed reset threshold voltages for ±5% or ±10% power supplies: 4.65V for the L versions and 4.40V for the M versions. The MAX817/ MAX818/MAX819 are available in space-saving µMAX® packages, as well as 8-pin DIP/SO.

简化框图

MAX817L、MAX817M、MAX818L、MAX81８M、MAX819L、MAX819M：典型工作电路 MAX817L、MAX817M、MAX818L、MAX81８M、MAX819L、MAX819M：典型工作电路 Zoom icon

Technical Docs

数据资料 +5V微处理器监控电路 Mar 14, 2006

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

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 。