80 µs propagation delay — what it buys you
The 80 µs typical propagation delay from threshold crossing to reset assertion is fast enough to catch supply glitches from load transients or brownout conditions in most MCU and DSP systems. It is not a high-speed comparator for nanosecond-level events, but for a power-on reset supervisor it is well within the margin needed to hold the processor in reset until the supply stabilises. The push-pull output means the reset line is actively driven high when the supply is good, avoiding the weak pull-up that open-drain supervisors require — useful if your MCU reset pin has a high input capacitance or if you want to avoid an extra resistor on the BOM.
Sourcing and lifecycle
This part is listed as Active in production with ROHS3 compliance. The SOT-23-5 package is widely second-sourced across the industry, but no official pin-compatible alternate from another manufacturer is listed in the available cross-reference data. If you need a second source for dual-supply resilience, look for a supervisor in the same package with an adjustable threshold and push-pull output — the MAX835EUK+T itself is the active baseline.