MAX794
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MAX794

3.0V/3.3V Adjustable Microprocessor Supervisory Circuits

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Full-Function Battery-Backup ICs for 3V/3.3V Systems

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $5.15
Features
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
Additional Details
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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.

Applications

  • Battery-Powered Computers/Controllers
  • Critical µP Power Monitoring
  • Embedded Controllers
  • Intelligent Controllers
  • Portable Equipment
Part Models 4
1ku List Price Starting From $5.15

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX794CSE+
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MAX794CSE+T
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MAX794ESE+
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MAX794ESE+T
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