MAX14946EWE+

MAX14946EWE+ is an isolated RS-485/RS-422 transceiver that provides 2750VRMS (60s) of 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 reducing noise when there are large differences in ground potential between ports. This device allows for robust communication up to 500Kbps. This device includes an integrated 45KHz transformer driver for power transfer to the cable side of the transceiver using an external transformer. An integrated LDO provides a simple and space-efficient architecture for providing power to the cable-side of the IC. This device includes one half-duplex driver/receiver channel. The receiver is 1/8-unit load, allowing up to 256 transceivers on a common bus. It is used in applications such as industrial automation equipment, programmable logic controllers, HVAC, and power meters.

• High integration simplifies designs
• Compliant with RS-485 EIA/TIA-485 standard, up to 256 devices on the bus
• ±30kV ESD (HBM) on driver outputs/receiver inputs
• 2.75KVRMS withstand-isolation voltage for 60s (VISO)
• 630VPEAK maximum repetitive peak-isolation voltage (VIORM)
• 445VRMS maximum working-isolation voltage (VIOWM), thermal shutdown
• VDDA supply voltage range from 3V to 5.5V
• Supply current (IDDA) is 4.7mA typ at (VDDA - VGNDA = 3.0V to 5.5V)
• Operating temperature range from -40°C to +85°C
• 16-pin WSOIC package

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