Battery backup supervisor with a 4.65V threshold
4.65V threshold — why that number matters
The 4.65V threshold sits just below a nominal 5V rail. In a 5V system, this means the supervisor holds the processor in reset until the supply is within about 7% of its target, then releases after the 140ms timeout. For a 3.3V-only design, this part won't work — the threshold is fixed and non-adjustable. If you're supervising a lower-voltage rail, you'd need a different threshold variant in the MAX70x family.
The ROHS3 compliance is also confirmed, so it fits modern assembly requirements without exemption paperwork.