RS-485/RS-422 full-duplex transceiver in 14-SOIC
The MAX489ESD+T: It handles data rates up to 250kbps over a single twisted pair or two pairs depending on the protocol mode. The supplier device package is 14-SOIC.
Active production and compliance status
RoHS compliance is confirmed to the ROHS3 standard. No additional compliance documentation (REACH, UL, IEC) is listed in the available records.
Board-level integration notes
Surface-mount 14-SOIC footprint with 1.27 mm pitch — standard SOIC-14 land pattern applies. No exposed pad; thermal dissipation relies on the package body and PCB copper. Full-duplex operation means the part drives and receives simultaneously on separate pairs. The 70 mV receiver hysteresis filters noise on the differential bus without external biasing. Data rate ceiling of 250 kbps suits Modbus RTU, BACnet MS/TP, and similar fieldbus applications where the bus length exceeds 1000 m at lower baud rates.