Open-drain microprocessor supervisory circuit monitors supply voltages from 2.5 V to 5 V in 100 mV increments. The active-low reset output asserts down to VCC above 1 V and remains low for selectable minimum timeout periods of 1 ms, 20 ms, 140 ms, or 1120 ms after recovery. A debounced active-low manual reset input accepts pulses greater than 1 μs and rejects typical 100 ns glitches. The device operates with typical supply current as low as 5 μA at 5.5 V and is specified for operation from −40°C to +125°C in a 4-lead SOT-143 package.
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| Product Function | Open-drain microprocessor supervisory circuit |
| Monitored Voltage Range | 2.5 to 5.0 in 100 mV incrementsV |
| Operating Voltage | 1.0 to 5.5V |
| Supply Current at 5.5 V | 5 typ, 12 max at −40°C to +85°C; 15 max at −40°C to +125°CµA |
| Supply Current at 3.6 V | 4 typ, 10 max at −40°C to +85°C; 12 max at −40°C to +125°CµA |
| Reset Threshold Accuracy | ±1.8 at 25°C; ±2.5 from −40°C to +85°C; ±3.5 from −40°C to +125°C% |
| Reset Threshold Temperature Coefficient | 60ppm/°C |
| VCC to Reset Delay | 35 typ at falling VCC slew rate of 1 mV/µsµs |
| Reset Active Timeout Period Options | 1, 20, 140, or 1120 minimumms |
| Manual Reset Input Pulse Width | 1 minimumµs |
| Manual Reset Glitch Rejection | 100 typns |
| Manual Reset to Reset Delay | 500 typns |
| Manual Reset Pull-Up Resistance | 32 min, 63 typ, 100 maxkΩ |
| Reset Output Voltage at VCC > 4.25 V | 0.4 max at ISINK = 3.2 mAV |
| Reset Output Leakage Current | 1 max when RESET deassertedµA |
| Operating Temperature Range | −40 to +125°C |
| Thermal Resistance, Junction-to-Ambient | 330°C/W |
| Package Option | RA-4 |
| ESD Rating | 2.5kV |
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