20 Mbps full-duplex RS-485/RS-422 transceiver
The Texas Instruments SN65HVD3086EDR is a full-duplex RS-485/RS-422 transceiver in a 14-SOIC package, rated for 20 Mbps data rate. The 30 mV receiver hysteresis cleans up slow edges on long stubs without external Schmidt triggers.
5 V supply — not a 3.3 V part
If your system is 3.3 V only, you will need a 5 V regulator or a different transceiver. At 20 Mbps, the driver output swing is specified for the 5 V bus levels that RS-485 expects; dropping the supply below 4.5 V risks losing differential output voltage margin and failing the receiver threshold at the far end.
TI lists the SN65HVD3086EDR as Active. The base product number is 65HVD3086, which covers the whole family, and the 'EDR' suffix indicates the 14-SOIC tape-and-reel variant. For dual-sourcing resilience, the pin-compatible SN65HVD3086E (same base, different suffix) is a direct alternative — same footprint, same 20 Mbps rating, same supply range.