Description
The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems.
They provide a reset to the microprocessor during power-up, powerdown and brown-out conditions.
Features
- 1 Precision Monitoring of Supply Voltages.
- Available Threshold Options: 2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V.
- Superior Upgrade to MAX809 and MAX810.
- Fully Specified Over Temperature.
- 140-ms Minimum Power-On Reset Pulse Width,
240-ms Typical.
- Active-Low RESET Output (LM809).
- Active-High RESET Output (LM810).
- Ensured RESET Output Valid for VCC ≥ 1 V.
- Low Supply Current, 15-µA Typical.
- Power Supply Transient.