This datasheet introduces the features and applications of Analog Devices ADM3485E 12Mbps ESD protected RS-485/RS-422 transceiver.
The ADM3485E is a low‑power, half‑duplex RS‑485/RS‑422 transceiver designed for balanced data transmission on multipoint bus lines. It features +15 kV ESD protection, a common‑mode input range of –7 V to +12 V, and a shutdown mode that reduces power consumption.
Typical applications include power and energy metering, telecommunications, EMI‑sensitive systems, industrial control, and local area networks. The device is supplied in an 8‑lead narrow SOIC package and complies with TIA/EIA RS‑485/RS‑422 standards.
| Supply voltage | Vcc = +3.3 V ±0.3 V |
|---|---|
| Maximum data rate | 12 Mbps |
| ESD protection (RS‑485 pins) | +15 kV |
| Bus nodes supported | Up to 32 nodes |
| Common‑mode input range | –7 V to +12 V |
| Package type | 8‑lead narrow SOIC |
| Shutdown current | 0.002 µA |
| Supply current (no load) | 1.1 mA typical |
The device supports a maximum data rate of 12 Mbps.
Up to 32 nodes can be connected on the bus.
It offers +15 kV ESD protection on the RS‑485 pins and 4 kV on all other pins.
The transceiver operates from VCC = +3.3 V ±0.3 V.
It is available in an 8‑lead narrow SOIC package.