This document is a technical manual for the ADM3485E data transceiver, which introduces the features and characteristics of the transceiver, including ESD protection, data rate, number of nodes, power supply voltage, and package
The ADM3485E is a 3.3 V, low‑power RS‑485/RS‑422 transceiver with ±15 kV ESD protection, designed for half‑duplex communication on multipoint bus lines. It supports up to 32 nodes, includes fail‑safe receiver operation, and offers thermal shutdown and short‑circuit protection.
The document provides full electrical specifications, timing diagrams, absolute maximum ratings, pin descriptions, test circuits, typical performance curves, package dimensions, and ordering information. It is organized with a table of contents covering features, applications, functional block diagram, specifications, and more.
| Supply Voltage (VCC) | 3.3 V ± 0.3 V |
|---|---|
| Maximum Data Rate | 12 Mbps |
| ESD Protection | ±15 kV (human body model) |
| Operating Temperature Range | –40 °C to +85 °C |
| Shutdown Current (typical) | 0.002 µA |
The device supports a maximum data rate of 12 Mbps.
The transceiver can be used with up to 32 nodes on a bus.
It provides ±15 kV ESD protection on the RS‑485 pins (human body model).
The part operates from 3.0 V to 3.6 V (3.3 V ± 0.3 V).