ADM3082

The ADM3082/ADM3085/ADM3088 are high-speed RS-485/RS-422 transceivers consisting of one driver and one receiver per package. The devices feature fail-safe operation, ensuring a logic-high receiver output when the receiver in-puts are open-circuit or short-circuit. This guarantees that the receiver output will be high if all the transmitters on a terminated bus are disabled (high-impedance).

The ADM3082 has a slew rate limited driver to minimize electromagnetic interference (EMI) and reduce reflections caused by incorrectly terminated cables. This allows for error-free transmission at data rates up to 115kbps. The ADM3085 offers a higher slew rate allowing data rates up to 500kbps, while the ADM3088 has a driver whose slew rate is not limited, allowing data rates of up to 10Mbps.

All devices in the family feature high receiver input impedance (1/8 unit load), allowing up to 256 transceivers on the bus. The devices have low current drain of 375 µA unloaded or fully loaded with the drivers disabled, and feature an ultralow power (1 nA) shutdown mode.

The ADM3082/ADM3085/ADM3088 are fully specified over the commercial and industrial temperature range and are available in 8-lead DIP and SOIC packages.