MAX14854
Info : RECOMMENDED FOR NEW DESIGNS
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MAX14854

2.75kVRMS Isolated 500kbps/25Mbps Full-Duplex RS-485/RS-422 Transceivers with ±35kV ESD Protection

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Industry's Most Robust Isolated RS-485

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.76
Features
  • High-Performance Transceiver Enables Flexible Designs
    • Integrated LDO for Cable Side Power
    • Compliant with RS-485 EIA/TIA-485 Standard
    • 500kbps (MAX14852)/25Mbps (MAX14854) Maximum Data Rate
    • Allows Up to 128 Devices on the Bus
  • Integrated Protection Ensures for Robust Communication
    • ±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)
    • > 30 Years Lifetime at Rated Working Voltage
    • Withstands ±10kV Surge per IEC 61000-4-5
    • Thermal Shutdown
Additional Details
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The MAX14852/MAX14854 isolated RS-485/RS-422 transceivers provide 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. These devices allow for robust communication up to 500kbps (MAX14852) or 25Mbps (MAX14854).

The devices include one drive channel and one receive channel. The receiver is 1/4-unit load, allowing up to 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.

The driver outputs and receiver inputs are protected from ±35kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM).

The MAX14852/MAX14854 are available in a wide-body 16-pin SOIC package and operate over the -40°C to +105°C temperature range.

Applications

  • HVAC
  • Industrial Automation Equipment
  • Power Meters
  • Programmable Logic Controllers
Part Models 2
1ku List Price Starting From $4.76

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX14854GWE+
  • HTML
  • HTML
MAX14854GWE+T
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX148X1EVKIT

Evaluation Kit for the MAX14852/MAX14854/MAX14856 and MAX14858

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MAX148X1EVKIT

Evaluation Kit for the MAX14852/MAX14854/MAX14856 and MAX14858

Evaluation Kit for the MAX14852/MAX14854/MAX14856 and MAX14858

Features and Benefits

  • Operates From a Single 3.3V Supply
  • Terminal Block Connectors for Easy RS-485/RS-422 Evaluation
  • Up to 5000VRMS Isolation for 60s
  • Fully Assembled and Tested

Product Detail

The MAX148X1 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the functionality of the MAX14852 isolated RS-485/RS-422 transceiver. The EV kit operates from a single 3.3V supply and features an onboard isolated power supply to power the secondary-side of the circuit.

The MAX148X1 EV kit may also be used to evaluate the MAX14854, MAX14856, and the MAX14858.

Applications

  • HVAC
  • Industrial Automation Equipment
  • Power Meters
  • Programmable Logic Controllers

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