Reset supervisor for low-voltage rails — 1.6 V threshold, 150 ms timeout
The MAX6466XR16+T from Maxim Integrated is a single-channel simple reset/power-on reset supervisor that monitors a 1.6 V supply rail and asserts an active-low, open-drain reset output for a minimum of 150 ms when the rail drops below threshold. The open-drain output lets you wire-OR multiple reset signals or pull up to a different logic voltage, which is handy when the monitored rail and the reset logic run at different levels. The part is specified across the full -40°C to 125°C operating range, so it fits into industrial control boards, automotive ECUs, or outdoor telecom gear where the ambient temperature swings wide.
Threshold and timeout — what they mean for your design
The 1.6 V threshold targets low-voltage cores and I/O banks. The 150 ms minimum reset timeout gives the main supply and oscillator time to stabilise before the processor starts executing code. The open-drain output lets you share the reset line with other supervisors or a manual reset button without contention.
Package and mounting — SC-70-3 footprint
Housed in a 3-lead SC-70 (SOT-323) package, the MAX6466XR16+T is specified for surface-mount assembly. The SC-70-3 footprint is common for small supervisory ICs, so the PCB layout is straightforward. The part ships on tape and reel (cut tape also available), which aligns with automated pick-and-place lines.