Package and mounting
Receiver hysteresis is 100 mV, which provides noise immunity on the RS232 line side. That matters in industrial environments where long cables pick up coupled noise from motors or switching supplies. The hysteresis prevents chatter at the logic output when the differential signal is marginal.
Package and temperature grade
Housed in a 20-SSOP (5.30 mm wide body), the part is a surface-mount device suited for automated assembly. The -40°C to 85°C operating range covers industrial temperature — outdoor telecom cabinets, factory-floor controllers, and HVAC panels all fall within this envelope.
Lifecycle and sourcing posture
The MAX218EAP+T is listed as Active and ROHS3 compliant. For a BOM freeze or a new design, this part is still a safe selection.
