MAX14940GWE+

MAX14940GWE+ is an isolated RS-485/PROFIBUS-DP transceiver that provides 2750VRMS (60s) of galvanic isolation between the cable-side (RS-485 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 20Mbps. 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 way of designing an isolated DC/DC supply. It includes one half-duplex driver/receiver channel that is fully compliant with both RS-485 and PROFIBUS-DP standards. The receiver is 1/4-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.

• High integration simplifies designs, thermal shutdown
• Compliant with RS-485 EIA/TIA-485 and EIA 61158-2 Type 3 PROFIBUS-DP standards
• ±35kV ESD (HBM) on driver outputs/receiver inputs
• 2.75KVRMS withstand isolation voltage for 60 seconds (VISO)
• 630VPEAK maximum repetitive peak isolation voltage (VIORM)
• 445VRMS maximum working isolation voltage (VIOWM)
• 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 +105°C
• 16-lead WSOIC package

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