MAX795T
3.0V/3.3V Adjustable Microprocessor Supervisory Circuits
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Full-Function Battery-Backup ICs for 3V/3.3V Systems
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Features
- 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
- 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
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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
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MAX795T
Documentation
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Data Sheet
3
MAX793-MAX795T: 3.0V/3.3V Adjustable Microprocessor Supervisory Circuits Data Sheet (Rev.6)
Reliability Data
1
28.18K
Documentation
Data Sheet 1
Reliability Data 1
Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
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Battery Backup IC2 |
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PRODUCTION |
Microprocessor Supervisory Circuits |
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PRODUCTION |
Full-Featured µP Supervisory Circuit with ±1.5% Reset Accuracy |
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Single-Supply Monitors2 |
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|
PRODUCTION |
Microprocessor and Nonvolatile Memory Supervisory Circuits |
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PRODUCTION |
Microprocessor and Nonvolatile Memory Supervisory Circuits |
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