Authentication chip in a 6-TDFN — what this part is
The Maxim Integrated DS28EL15Q+T is a DeepCover® authentication chip — a dedicated security IC, not a general-purpose microcontroller or memory. It is designed for one job: verifying that a connected device or consumable is genuine, using cryptographic handshakes rather than simple ID checks. For a rework tech: the pad is small but the exposed pad helps solder wetting under hot air; just make sure the board footprint has a central thermal via or two to pull heat away during reflow.
Active lifecycle — no obsolescence concern
Surface-mount only. For a rework station: the pad is about 2.2 mm square, so a standard hot-air nozzle with a 5 mm opening will cover it without overheating adjacent passives.