MAX804R
3.0V/3.3V Microprocessor Supervisory Circuits
Industry's-First Battery-Backup Supervisor for 3.3V/3.0V Systems
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | 3.0V/3.3V Microprocessor Supervisory Circuits | Apr 01, 2015 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Key Features
- Active-Low RESET and RESET Outputs
- Manual Reset Input
- Precision Supply-Voltage Monitor
- 200ms Reset Time Delay
- Watchdog Timer (1.6sec timeout)
- Battery-Backup Power Switching-Battery Can Exceed VCC in Normal Operation
- 40µA VCC Supply Current
- 1µA Battery Supply Current
- Voltage Monitor for Power-Fail or Low-Battery Warning
- Guaranteed Active-Low RESET Assertion to VCC = 1V
- 8-Pin DIP and SO Packages
Applications/Uses
- Battery-Powered Computers/Controllers
- Critical µP Monitoring
- Embedded Controllers
- Intelligent Instruments
- Portable Equipment
Description
These devices are designed for use in systems powered by 3.0V or 3.3V supplies. See the selector guide in the back of this data sheet for similar devices designed for 5V systems. The suffixes denote different reset threshold voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see Reset Threshold section in the Detailed Description). All these parts are available in 8-pin DIP and SO packages. Functions offered in this series are as follows:
| Part | Active-Low Reset | Active-High Reset | Watchdog Input | Manual Reset Input | Backup-Battery Switch | Power-Fail Threshold Accuracy | Power-Fail Comparator | Reset Window |
| MAX690 | √ | √ | √ | ±4% | √ | ±75mV | ||
| MAX704 | √ | √ | √ | ±4% | √ | ±75mV | ||
| MAX802 | √ | √ | √ | ±2% | √ | ±2% | ||
| MAX804 | √ | √ | √ | ±2% | √ | ±2% | ||
| MAX805 | √ | √ | √ | ±4% | √ | ±75mV | ||
| MAX806 | √ | √ | √ | ±2% | √ | ±2% |
Technical Docs
| Data Sheet | 3.0V/3.3V Microprocessor Supervisory Circuits | Apr 01, 2015 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
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