ADM306xE Half-Duplex 50 Mbps RS-485 Transceiver

ADI's ADM3061E, ADM3062E, ADM3063E, ADM3064E, ADM3065E, ADM3066E, ADM3067E, and ADM3068E are 3.0 V to 5.5 V, IEC electrostatic discharge (ESD) protected RS-485 transceivers, allowing the devices to withstand ±12 kV contact discharges on the transceiver bus pins without latch-up or damage. The ADM3062E, ADM3064E, ADM3066E, and ADM3068E feature a V_IO logic supply pin that allows a flexible digital interface capable of operating as low as 1.62 V.

The ADM3065E, ADM3066E, ADM3067E, and ADM3068E are suitable for high-speed, 50 Mbps, bidirectional data communication on multipoint bus transmission lines. The ADM3061E, ADM3062E, ADM3063E, ADM3064E, ADM3065E, ADM3066E, ADM3067E, and ADM3068E feature a 1/4 unit load input impedance that allows up to 128 transceivers on a bus. The ADM3061E, ADM3062E, ADM3063E, and ADM3064E models offer all of the same features as the ADM3065E, ADM3066E, ADM3067E, and ADM3068E models at a low 500 kbps data rate that is suitable for operation over long cable runs.

The ADM3061E, ADM3062E, ADM3065E, and ADM3066E are half-duplex RS-485 transceivers, fully compliant with the PROFIBUS® standard with increased 2.1 V bus differential voltage at V_CC ≥ 4.5 V. The ADM3063E, ADM3064E, ADM3067E, and ADM3068E are full duplex RS-485 transceiver options.

The RS-485 transceivers are available in a number of space-saving packages, including the 10-lead, 3 mm × 3 mm lead frame chip-scale package (LFCSP), the 8-lead or 10-lead, 3 mm × 3 mm mini small outline package (MSOP), and the 8-lead or 14-lead, narrow body standard small-outline packages (SOIC_N). Models with operating temperature ranges of -40°C to +125°C and -40°C to +85°C are available.

This feature forces the driver output into a high impedance state if a significant temperature increase is detected in the internal driver circuitry during fault conditions.

The ADM3061E, ADM3062E, ADM3063E, ADM3064E, ADM3065E, ADM3066E, ADM3067E, and ADM3068E guarantee a logic high receiver output when the receiver inputs are shorted, open, or connected to a terminated transmission line with all drivers disabled.

Table 2 in the datasheet presents an overview of the ADM3061E, ADM3062E, ADM3063E, ADM3064E, ADM3065E, ADM3066E, ADM3067E, and ADM3068E data rate capability across temperature, power supply, and package options. Refer to the ordering guide section for model numbering.

The EVAL-ADM3066EEBZ and EVAL-ADM3066EEB1Z allow quick and easy evaluation of the ADM3066E 50 Mbps RS-485 transceiver with standard MSOP and LFCSP footprints, respectively. The evaluation boards allow the input and output functions to be exercised without external components. Screw terminal blocks provide convenient connections for power and ground, digital input and output, and RS-485 signals. The evaluation boards can be powered by a standard configurable bench power supply within a 3.0 V to 5.5 V range.