MAX14855GWE+

MAX14855GWE+ 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 reduces noise when there are large differences in ground potential between ports. It includes an integrated 450KHz 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. It includes one drive channel and one receive channel. The receiver is a ¼-unit load, allowing up to 128 transceivers on a common bus. It is used in applications such as industrial automation equipment, programmable logic controllers, HVAC, and power meters.

• UL according to UL1577, cUL according to CSA bulletin 5A (safety approval)
• Integrated transformer driver for power transfer to cable side, 5Mbps data rate
• High-performance transceiver enables flexible designs
• ±35kV 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)
• Withstands ±10kV surge per IEC 61000-4-5, thermal shutdown
• VDDA supply voltage range from 3V to 5.5V, supply current is 4.7mA typical at (TA = +25°C)
• Operating temperature range from -40°C to +105°C, 16-pin WSOIC package

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