MAXM22511GLH+

MAXM22511GLH+ is a 2.5kVRMS complete isolated RS-485/RS-422 module transceiver + power. An integrated DC-DC powers the cable side of the module. No external components are required. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. It operates from a single 3.3V supply on the UART side. An integrated DC-DC converter generates the 3.3V operating voltage for the cable side of the module. It includes one drive channel and one receive channel. The receiver is a 1/4-unit load, allowing upto 128 transceivers on a common bus. Integrated true fail-safe circuitry ensures a logic high on the receiver output when inputs are shorted or open. Undervoltage lockout disables the driver when cable-side or UART-side power supplies are below functional levels. It is used in applications such as industrial automation, programmable logic controllers, HVAC, power meters, and building automation.

• Space saving solution, fully integrated module for compact design
• High-performance transceiver enables flexible designs, integrated DC-DC for cable-side power
• Compliant with RS-485 EIA/TIA-485 standard, 25Mbps maximum data rate
• Integrated protection ensures for robust communication, supply voltage range from 3V to 3.6V
• Withstands ±10kV surge per IEC 61000-4-5, thermal shutdown
• ±35kV ESD (HBM) on driver outputs/receiver inputs, supply current is 25mA typical
• 2.5kVRMS withstand isolation voltage for 60 seconds (VISO)
• 445VRMS maximum working-isolation voltage (VIOWM), glitch rejection is 17ns typical
• UL according to UL1577, cUL according to CSA bulletin 5A (safety approval)
• Operating temperature range from -40°C to +105°C, 44-lead LGA package

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