SOT-23-8 supervisor with dual-voltage monitoring
The MAX6392KA44+T: The fixed threshold is set at 4.38V on one input, while the second input accepts an adjustable threshold via an external resistor divider, giving flexibility for non-standard rail voltages.
Reset timing and output drive
The reset timeout is 140ms by default but can be extended with an external capacitor, allowing the supervisor to hold the system in reset long enough for the power supplies and oscillator to stabilise. The reset output can be configured as either open-drain or push-pull, so it interfaces directly with both wired-OR reset buses and single-master GPIO inputs without an external pull-up resistor.
Industrial temperature range and SOT-23-8 footprint
The SOT-23-8 package (supplier device package SOT-23-8) occupies minimal board area and is a standard footprint for supervisor ICs, making it a drop-in for existing layouts that use this pinout.