What this RS485 transceiver brings to the bus
The MAX3442EESA+T is a half-duplex RS485/RS422 transceiver from Analog Devices, packing one driver and one receiver into an 8-SOIC package. It handles data rates up to 250kbps over a single twisted pair, with the receiver hysteresis set at 25 mV to reject noise on long cable runs.
Supply and temperature envelope
Runs from a single 5V rail (4.75V to 5.25V), which is the standard supply for RS485 bus nodes in industrial control panels.
Package and board integration
The narrow-body SOIC footprint is a common layout for RS485 transceivers — the same board pattern accepts many pin-compatible parts from other vendors, which simplifies second-sourcing during BOM review.