RS-232 link for serial debug and legacy UART ports
The MAX3223EUP+: The 300 mV receiver hysteresis provides noise margin on longer or electrically noisy RS-232 cable runs, reducing the chance of false edges on the UART receive line.
Housed in a 20-TSSOP (4.40 mm width, 0.65 mm pitch), the surface-mount package keeps the footprint compact — about 6.5 mm × 6.4 mm — fitting into space-constrained designs alongside the MCU or SoC. The 20-TSSOP is a common logic-package footprint; the PCB land pattern matches the JEDEC MO-153 standard, so the layout is reusable across multiple transceiver or level-shifter variants in the same family.