The MAX33047E-49E are a full-duplex RS-485/422 transceiver family that operates at either 3.3V or 5V supply rails for ease of design. These devices provide enhanced protection for the applications used in harsh electrical environments. All driver outputs and receiver inputs are protected with both high fault protection and high electrostatic discharge (ESD) protection.The A/B data lines have fault protection up to ±25V for accidental shorts with local power supplies and ±40kV ESD human body model (HBM) protection. They are also rated up to ±15kV Air-Gap Discharge and ±10kV Contact Discharge as per IEC 610004-2. Both features ensure robust protection in harsh industrial environments. The drivers are short-circuit limited and protected against excessive power dissipation by the thermal-shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a true fail-safe feature that guarantees a logic-high output if both the inputs are open or short-circuited.These devices are encased in an 8-pin and 14-pin small outline integrated circuit (SOIC) package with an operating temperature from -40°C to +125°C.APPLICATIONSProgrammable Logic Controller (PLC)Factory Automation EquipmentIndustrial