MAX22028FAWA+

MAX22028FAWA+ is a compact isolated RS-485/RS-422 transceiver that provides 3.5KVRMS of digital galvanic isolation between the cable side (RS-485/RS-422 driver/receiver side) and the UART side of the device. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. It features proprietary auto direction control making this device ideal for applications such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus. The driver outputs and receiver inputs are protected from ±10kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the human body model (HBM). It is used in applications such as utility meters, industrial automation equipment, programmable logic controllers, and HVAC.

• UL according to UL1577, cUL according to CSA bulletin 5A (safety approval)
• Fully isolated half-duplex RS-485/RS-422 transceivers
• ±10kV ESD (HBM) on driver outputs/receiver inputs
• Withstands 3.5KVRMS isolation voltage for 60seconds (VISO)
• Withstands 630VPEAK maximum repetitive peak isolation voltage (VIORM)
• Continuously withstands 445VRMS maximum working-isolation voltage (VIOWM)
• VDDA supply voltage range from 1.71V to 5.5V
• Supply current (IDDA) is 0.39mA typ at (VDDA = 3.3V, RXD is unconnected, TXD = low, no bus load)
• Follows (VA-VB) RXD in driver enable state, 16Mbps driver speed, fail-safe receiver
• Operating temperature range from -40°C to +85°C, 8-pin wide SOIC package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party