This document describes the features and characteristics of ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E series products, including TIA/EIA RS-485/RS-422 compliant, ±15 kV ESD protection, half-duplex and full-duplex options, etc.
The ADM3483E, ADM3486E, ADM3488E, ADM3490E and ADM3491E are low‑power 3.3 V data transceivers that meet TIA/EIA RS‑485/RS‑422 standards. They are offered in half‑duplex (ADM3483E, ADM3486E) and full‑duplex (ADM3488E, ADM3490E, ADM3491E) configurations and support up to 32 nodes on a bus.
Key features include +15 kV ESD protection on RS‑485 pins, a common‑mode input range of –7 V to +12 V, thermal shutdown and short‑circuit protection, and availability in 8‑lead and 14‑lead narrow SOIC packages. Detailed electrical parameters such as data rates, driver timing, and receiver specifications are provided for each part number.
| Maximum data rate | 12 Mbps (ADM3490E/ADM3491E) |
|---|---|
| Supply voltage | 3.0 V to 3.6 V |
| ESD protection (RS‑485 pins) | +15 kV |
| Common‑mode input range | –7 V to +12 V |
| Package options | 8‑lead and 14‑lead narrow SOIC |
| Shutdown current | 0.002 mA (typical) |
The ADM3491E supports a maximum data rate of 12 Mbps.
They provide +15 kV ESD protection on the RS‑485 pins and +4 kV on all other pins.
The devices are offered in 8‑lead and 14‑lead narrow SOIC packages.
The common‑mode input range is –7 V to +12 V.