Simplified Block Diagram
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- ±0.6% Threshold Accuracy at TA = +25°C
- ±1.0% Threshold Accuracy from -40°C to +125°C
- Small SOT143 Package
- Open-Drain Active-Low RESET Output Can Exceed VCC
- Precision, Factory-Set VCC Reset Thresholds: Nine Options from 2.4V to 4.8V
- Four Reset Timeout Periods Available: 0.7ms, 14ms, 105ms, and 826ms (minimum)
- Immune to Short VCC Transients
- 5µA Supply Current
- AEC-Q100 Qualified, Refer to Ordering Information for Specific /V Part
- Critical µP and µC Power Monitoring
- Intelligent Instruments
- Portable/Battery-Powered Equipment
This device performs a single function: it asserts a reset signal whenever the VCC supply voltage falls below a preset threshold or whenever manual reset is asserted. Active-low RESET remains asserted for an internally programmed interval (reset timeout period) after VCC has risen above the reset threshold or manual reset is deasserted. The MAX6394's open-drain active-low RESET output can be pulled up to a voltage higher than VCC.
The MAX6394 comes with factory-trimmed reset threshold voltages from 2.4V to 4.8V. Preset timeout periods of 0.7ms, 14ms, 105ms, and 826ms are also available. The device comes in a SOT143 package.