MAX690T
3.0V/3.3V Microprocessor Supervisory Circuits
Industry's-First Battery-Backup Supervisor for 3.3V/3.0V Systems
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Overview
Features and Benefits
- 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
Product Details
These microprocessor (µP) supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in µP systems. They significantly improve system reliability and accuracy compared to separate ICs or discrete components.
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% |
Applications
- Battery-Powered Computers/Controllers
- Critical µP Monitoring
- Embedded Controllers
- Intelligent Instruments
- Portable Equipment
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
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MAX690T Reliability Data1/12/2023PDF40K
Tools & Simulations
IBIS Models
IBS
MAX690T IBIS Model
41.33K
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX690TCSA+ | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| MAX690TCSA+T | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| MAX690TESA+ | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| MAX690TESA+T | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| Wafer Fabrication Data | MAX690T Reliability Data |
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