The ADM2481 is a half-duplex RS-485 transceiver with electrical data isolation. The transceiver complies with ANSI TIA/EIA-485-A and ISO 8482: 1987(E) standards. The data rate is 500 kbps.
The ADM2481 differential bus transceiver integrates a 3‑channel isolator, a three‑state driver, and a differential receiver in a single SOIC package. It supports 5 V or 3.3 V logic supplies and provides fail‑safe receiver inputs, thermal shutdown, and protection for up to 256 nodes on a bus.
The datasheet details electrical specifications such as a 500 kbps maximum data rate, 25 kV/µs common‑mode transient immunity, and an operating temperature range of –40 °C to +85 °C. Regulatory information includes UL 1577 and VDE 0884 certifications, and the pin configuration for the 16‑lead package is provided.
| Maximum Data Rate | 500 kbps |
|---|---|
| Common‑mode Transient Immunity | >25 kV/µs |
| Operating Temperature Range | -40 °C to +85 °C |
| Logic‑side Supply Current | 25 mA |
| Package | 16‑lead wide‑body SOIC |
The ADM2481 supports a maximum data rate of 500 kbps.
It operates from –40 °C to +85 °C.
The transceiver can be used with up to 256 nodes on the bus.