Quad RS-422/RS-485 driver for industrial serial buses
The Maxim MAX3040EWE+ is a quad differential line driver supporting both RS-422 and RS-485 protocols. It provides four independent drivers in a single 16-SOIC wide-body package, with no integrated receivers — a pure driver-only part for transmit-side applications where the receive path is handled separately. The 250 kbps data rate suits moderate-speed industrial serial links, including PLC-to-drive interfaces, building automation buses, and instrumentation networks where cable lengths reach several hundred metres at this baud rate.
Supply and temperature — fit for industrial panels
The supply range is 4.75 V to 5.25 V. Operating temperature spans -40°C to 85°C.
Package and handling — tube, not tape
For automated pick-and-place lines, plan for tube-fed feeders or a transfer to tape at the contract manufacturer. The 16-SOIC wide-body footprint (7.50 mm body width) is standard and matches the supplier device package code 16-SOIC.
Lifecycle and compliance — no obsolescence risk
It is ROHS3 compliant, covering the latest EU restriction on hazardous substances without exemptions. No lead-free finish concerns for global shipping or RoHS-regulated markets.