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MAX793S
电源管理 电路监控、电压监测器及排序器 MAX793S
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MAX793S

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3.0V/3.3V可调、微处理器监控电路

功能完备的电池备份IC，用于3V/3.3V系统

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) 2.5 to 3.3
Reset Out Active High
Active Low
Open Drain
Push-Pull
ICC (µA) (max) 60
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/16
SOIC (N)/16
Budgetary
Price (See Notes) 		4.96
请参见参数规范 Battery Backup Circuits
缩小

简化框图

Technical Docs

数据资料 3.0V/3.3V可调、微处理器监控电路 Mar 29, 2010

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参量

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 2.5 to 3.3
Reset Out Active High
Active Low
Open Drain
Push-Pull
ICC (µA) (max) 60
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/16
SOIC (N)/16
Budgetary
Price (See Notes) 		4.96
See parametric specs for Battery Backup Circuits

主要特征

MAX793/MAX794/MAX795
  • Precision Supply-Voltage Monitor:
    • Fixed Reset Trip Voltage (MAX793/MAX795)
    • Adjustable Reset Trip Voltage (MAX794)
  • Guaranteed Reset Assertion to VCC = 1V
  • Backup-Battery Power Switching—Battery Voltage Can Exceed VCC
  • On-Board Gating of Chip-Enable Signals—7ns Max Propagation Delay
MAX793/MAX794 Only
  • Battery Freshness Seal
  • Battery OK Output (MAX793)
  • Uncommitted Voltage Monitor for Power-Fail or Low-Battery Warning
  • Independent Watchdog Timer (1.6s timeout)
  • Manual Reset Input

应用/用途

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

描述

The MAX793/MAX794/MAX795 microprocessor (µP) supervisory circuits monitor and control the activities of +3.0V/+3.3V µPs by providing backup-battery switchover, among other features such as low-line indication, µP reset, write protection for CMOS RAM, and a watchdog (see the Selector Guide in the full data sheet). The backup-battery voltage can exceed VCC, permitting the use of 3.6V lithium batteries in systems using 3.0V to 3.3V for VCC.

The MAX793/MAX795 offer a choice of reset threshold voltage range (denoted by suffix letter): 3.00V to 3.15V (T), 2.85V to 3.00V (S), and 2.55V to 2.70V (R). The MAX794's reset threshold is set externally with a resistor divider. The MAX793/MAX794 are available in 16-pin DIP and narrow SO packages, and the MAX795 comes in 8-pin DIP and SO packages.

简化框图

MAX793、MAX793R、MAX793S、MAX793T、MAX794、MAX795、MAX795R、MAX795S、MAX795T：典型工作电路 MAX793、MAX793R、MAX793S、MAX793T、MAX794、MAX795、MAX795R、MAX795S、MAX795T：典型工作电路 Zoom icon

Technical Docs

数据资料 3.0V/3.3V可调、微处理器监控电路 Mar 29, 2010

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 。