3.08V threshold supervisor in SOT-23-8
The MAX6367PKA31 is a single-channel battery backup supervisor IC from Analog Devices, monitoring a single voltage rail with a 3.08V threshold. This output type allows the reset signal to be wire-ORed with other open-drain outputs, common in multi-voltage systems where several supervisors share a common reset line.
Industrial temperature range and deployment
The SOT-23-8 package keeps the footprint small — eight pins on a 0.65mm pitch, fitting a two-layer board without difficulty. As a battery backup circuit, its primary role is to monitor the main supply and switch the system to a backup battery when the main rail falls, while also asserting a processor reset. The single-voltage monitoring means one supervisor per rail — a system with 3.3V and 1.8V rails would need two of these ICs.
No pin-compatible second source is documented — the MAX6367 is a proprietary Analog Devices part, so the BOM line is single-sourced unless a functional equivalent from another vendor is validated.