What this supervisor does and where it fits
The MAX6382XR17D3 from Maxim Integrated is a single-channel voltage supervisor that asserts a reset signal when the monitored supply drops below a 1.67V threshold. It holds reset active for a minimum of 140ms after the supply recovers, giving the downstream processor time to stabilize. The active-high, push-pull output drives directly into CMOS or TTL logic without an external pull-up. This part is built for environments that see wide temperature swings — the -40°C to 125°C operating range suits it for industrial motor drives, automotive engine control modules, and outdoor telecom gear where the board lives through cold starts and under-hood heat.
1.67V threshold — what it means for your rail
The 1.67V threshold monitors a 1.8V nominal supply rail. The 140ms minimum reset timeout allows bulk-capacitor charging on power-up without false resets.
Package and mounting
Housed in a 3-lead SC-70 (SOT-323 footprint), this is a small surface-mount part. The SC-70-3 reflows cleanly with standard lead-free profiles.
RoHS status — a compliance constraint
This part is marked RoHS non-compliant. If your BOM requires lead-free assembly per EU RoHS or similar directives, the MAX6382XR17D3 does not meet that requirement. For RoHS-compliant builds, look at the MAX6382XR17D3+ (with a '+' suffix) or other threshold variants in the same family that carry RoHS compliance. The non-compliant status does not affect performance or reliability — it is a materials-composition issue for the solder finish.
Sourcing and supply posture
It is sourced through independent distribution and quoted to order against an RFQ. For volume production or long-term supply assurance, the active status means no last-time-buy risk.