The ST8034HNQR: Designed specifically for Smart Card interfaces, this IC handles the level shifting, sequencing, and fault protection between a host controller and a card slot. The dual supply range of 3V or 5V covers both legacy 5V smart cards and modern 3V-only readers.
Package and board-fit for the 24-QFN
Housed in a 24-VFQFN Exposed Pad package measuring 4x4mm, the ST8034HNQR mounts on the PCB with the thermal pad soldered to a ground-plane via array for heat sinking. The supplier device package is 24-QFN (4x4). Surface-mount assembly with the exposed pad requires a stencil aperture covering at least 50% of the pad area for proper solder joint reliability. The QFN footprint is standard for this pin count — no exotic land pattern.