It handles one driver and one receiver on a single 5V supply rail (4.5V to 5.5V) and pushes data at 1 Mbps. The 30 mV of receiver hysteresis cleans up noisy bus signals without external filtering.
Last-time-buy — plan your final order
TI has placed the SN65HVD3085EDGK into Last Buy status. That means the manufacturer has announced end-of-life and is accepting final purchase orders within a defined window. Once that window closes, the part enters the surplus-and-broker channel exclusively. If you have an active BOM that calls out this exact order code, now is the time to secure your lifetime buy or qualify a drop-in replacement.
What the 1 Mbps data rate and 5V supply mean for your design
1 Mbps is a solid mid-speed rating for RS-485 — fast enough for most industrial fieldbus applications (Modbus RTU, Profibus DP at lower speeds) without the signal-integrity headaches of multi-megabit links. The 5V supply (4.5V to 5.5V) is the classic industrial rail; it gives you good common-mode range and noise margin on long cable runs. If your system runs on 3.3V logic, you will need a level shifter or a 3.3V-rated transceiver variant. The half-duplex bus means a single twisted pair handles both transmit and receive — you manage direction with a GPIO pin on the driver enable.
The SN65HVD3085EDGK comes in an 8-VSSOP package (also known as MSOP-8 or TSSOP-8, 0.118" body width, 3.00 mm). It is a surface-mount part, so plan for a reflow profile. The small footprint saves board space but means the pin pitch is 0.65 mm — verify your PCB fab can handle that reliably. No exposed thermal pad on this package; keep the trace widths adequate for the bus current and route the differential pair with controlled impedance if the cable run is long.