The ADM3493 is a low power, differential line transceiver designed to operate using a single 3.3 V power supply. It is compliant with EIA RS-422 and RS-485 standards, and has a data rate of 250 kbps. The device is available in an 8-lead SOIC package and can be used in low power RS-485 applications, EMI sensitive systems, DTE-DCE interfaces, industrial control, packet switching, local area networks and level translators.
The ADM3493 is a low‑power, half‑duplex RS‑485/RS‑422 transceiver that operates from a single 3.3 V supply. It offers reduced EMI through slew‑rate limiting, a shutdown mode drawing only a few nanoamps, and can be used in up to 256‑node bus networks.
The document includes detailed electrical specifications, timing parameters, pin descriptions, test circuits, mechanical dimensions, and ordering information for the 8‑lead SOIC package.
| Supply Current (typical) | 1.1 mA – 2.2 mA |
|---|---|
| Shutdown Supply Current | 2 nA |
| Driver Output Delay | 600 ns – 1400 ns |
| Input Resistance | 96 kΩ |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 8‑lead SOIC |
Up to 256 transceivers can be connected on the bus.
In shutdown mode the device draws only about 2 nA of supply current.