ADM2795/ADM3095 Isolated RS485/RS422 Transceivers

ADI’s ADM2795/ADM3095 are a 2 k/5 kV_RMS signal-isolated RS485 transceivers that features up to ±42 V of AC/DC peak bus overvoltage fault protection on the RS485 bus pins. The device integrates iCoupler technology from ADI to combine a 3-channel isolator, RS485 transceiver, and IEC electromagnetic compatibility (EMC) transient protection in a single package. The ADM2795 is an RS485/RS422 transceiver that integrates IEC 61000-4-5 Level 4 surge protection, allowing up to ±4 kV protection on the RS485 bus pins (A and B).

The ADM2795/ADM3095 has IEC 61000-4-4 Level 4 EFT protection up to ±2 kV and IEC 61000-4-2 Level 4 ESD protection on the bus pins, allowing this device to withstand up to ±15 kV on the transceiver interface pins without latching up. This device has an extended common-mode input range of ±25 V to improve data communication reliability in noisy environments. The device is capable of operating over wide power supply ranges, with a 1.7 V to 5.5 V V_DD1 power supply range. The ADM2795 is also fully TIA/EIA RS485/RS422 compliant when operated over a 3 V to 5.5 V V_DD2 power supply. The ADM3095 is a 3.0 V to 5.5 V, 2.5 Mbps RS485 transceiver. The device has an extended operating temperature range of -40°C to +125°C and is available in a 16-SOIC package. The ADM2795/ADM3095 are ideal for HVAC, automation, and utility network applications.