MAX14945EWE Integrated Circuit Chip 2.75 kV RMS Isolated 500kbps RS485 Transceiver, SOIC Wide Body

The MAX14945EWE is an isolated RS-485/RS-422 transceiver providing 2.75 kV RMS of galvanic isolation for 60 seconds between the cable side driver and receiver and the UART side of the device, breaking ground loops between ports at different potentials.

Cable side power comes from an integrated LDO, so the isolated side needs no separate isolated supply. Data rates reach 500 kbps, and the receiver loading allows up to 256 devices on one bus.

Protection covers ±30kV human body model ESD on the driver outputs and receiver inputs, ±10kV surge immunity to IEC 61000-4-5, undervoltage lockout and thermal shutdown. True fail-safe circuitry holds a logic high output when the inputs are shorted or open.

Isolation ratings are 630 V peak maximum repetitive peak isolation voltage and 445 V RMS maximum working isolation voltage, with a projected lifetime above 30 years at rated working voltage. The part is compliant with the RS-485 EIA/TIA-485 standard.

The MAX14945EWE is supplied in a SOIC Wide Body package. Every order ships as new stock with full traceability, RoHS compliant and lead free, and samples plus volume pricing are available on request.

• 2.75 kV RMS isolation for 60 seconds
• 500 kbps maximum data rate
• Integrated LDO for cable side power
• ±30kV HBM ESD on driver outputs and receiver inputs
• ±10kV surge immunity to IEC 61000-4-5
• 630 V peak maximum repetitive peak isolation voltage
• 445 V RMS maximum working isolation voltage
• Above 30 years lifetime at rated working voltage
• Up to 256 devices on the bus
• True fail-safe receiver
• Undervoltage lockout and thermal shutdown
• RS-485 EIA/TIA-485 compliant
• SOIC Wide Body package

• Isolated RS485 ports in motor drives
• Industrial gateways and protocol converters
• PROFIBUS-DP nodes and repeaters
• Building automation controllers
• Solar and energy storage monitoring
• Multi-point field bus networks

The MAX14945EWE moves the isolation barrier into one package, so an isolated RS485 port costs fewer parts and less board area than a discrete design.

• 15+ years of electronic components experience
• Secure ordering process
• Excellent customer feedback
• Confirmed delivery dates
• Competitive pricing on volume orders
• Global export experience with responsive after-sales support

We also carry the related parts shown below, so mixed bills of material can ship together from a single supplier.