MAX14948EWE+

MAX14948EWE+ is an isolated RS-485/RS-422 transceiver that provides 5000VRMS (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. This device allows for robust communication up to 500kbps. It includes one half-duplex drive/receive channel. The receiver is a 1/8-unit load, allowing up to 256 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. Applications include industrial automation equipment, programmable logic controllers, HV AC, and power meters.

• UL according to UL1577, cUL according to CSA bulletin 5A safety regulatory approvals
• High-performance transceiver enables flexible designs
• Integrated LDO for cable-side power, compliant with RS-485/EIA-485 standard
• Integrated protection ensure robust communication
• > 30 years lifetime at rated working voltage, thermal shutdown
• 1200VPEAK maximum repetitive peak-isolation voltage (VIORM)
• Supply voltage range from 1.71 to 5.5V
• Common mode transient immunity is 35kV/μs typ at TA=+25°C
• Driver propagation delay is 1040ns max at RL=54ohm, CL=50pF
• 16 SOIC (W) package, -40°C to +85°C temperature range

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