The MAX3030ECUE+ is a quad RS422/RS485 line driver from Analog Devices — four drivers on one 16-TSSOP package, no receivers. This is a pure driver IC, so you pair it with a separate RS485 receiver on the bus.
The 20 Mbps data rate is the practical ceiling for this driver — at that speed the output transition times are tight enough to drive short cable runs (a few metres) without reflections eating the eye. For longer runs or noisy factory-floor environments, you back off to 10 Mbps or slower and let the cable's characteristic impedance dominate. The 4/0 driver/receiver count means this part only drives; you need a separate RS485 receiver (like a MAX3082 or similar) on the same twisted pair to get bidirectional communication. That matters when you're populating a BOM: one MAX3030ECUE+ plus one receiver per node, versus a full transceiver that does both.
Supply and temperature — the operating envelope
The 3V to 3.6V supply range fits a regulated 3.3V rail with typical ±5% tolerance. If your board runs a 3.0V rail or a 3.6V absolute-max supply, this driver sits inside that window. For those environments you step up to the industrial-grade variant (MAX3030EEUE+, -40°C to +85°C) — same pinout, same speed, just wider temperature tolerance.
The 16-TSSOP body (4.40mm width, 0.173" pitch) is a fine-pitch surface-mount package. The supplier device package is 16-TSSOP, so the footprint matches standard TSSOP-16 land patterns. Tube shipping means each tube holds a fixed quantity — not reel-fed for automated pick-and-place unless you transfer to tape. If your line runs tape feeders, order the tape-and-reel variant (MAX3030ECUE+T).
ROHS3 compliant, so it clears European and most global assembly lines without exemption paperwork.