MAX22088

PRODUCTION

Home Bus System (HBS) Compatible Transceiver

Home Bus Compliant Transceivers with Integrated Power Transfer Reduces Solution Size by 10X

Data Sheet (Rev. 4)
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Overview

  • High Integration Reduces BOM and Footprint
    • Eliminates the Need for Large AC-blocking Inductor
    • Compact 4mm x 4mm TQFN Package
    • Supports External DC-DC Converter for System Loads More Than 70mA
  • Configurability Enables Flexible Design
    • Adjustable Receiver Thresholds
    • Switched Cable Termination
    • Adjustable Slew Rate on Transmit Signals
    • Large Receiver Hysteresis
    • Data Rates from 9600bps to 200kbps
    • Dynamic Cable Termination Improves Signal Quality for High Speed Applications
  • Integrated Protection for Robust Communication
    • IEC 61000-4-2 ±8kV Contact and ±15kV Air-Gap ESD Protection
    • IEC 61000-4-5 ±1kV Surge Protection with Selected External Components
    • -40°C to +105°C Operating Temperature Range
    • Thermal Shutdown Protection

The MAX22088 Home Bus System (HBS) compatible transceiver can be used in the Home Bus System, where data and power are passed on a single pair of wires, while minimizing the need for external components. The MAX22088 eliminates the large external AC-blocking inductor typically required in bus powered applications and improves the signal quality to allow for longer cables. Additionally, the MAX22088 features an integrated 5V linear regulator to power system loads up to 70mA (max).

The MAX22088 supports passing data with speed up to 200kbps. The MAX22088 features dynamic cable termination to improve the signal quality for applications with high data rates.

Additional features include adjustable receiver hysteresis, receiver thresholds and driver slew rate allow the MAX22088 to be used in a wide variety of systems.

Integrated protection (IEC 61000-4-2 ±8kV Contact and ±15kV Air-Gap ESD) ensures robust communication in harsh industrial environments. The MAX22088 is specified for operation over the -40°C to +105°C temperature range and is available in a compact 24-pin 4mm x 4mm TQFN package.

Applications

  • HVAC
  • Data over Power Applications
  • Digital Signage
  • Remote Monitoring and Sensing
MAX22088
Home Bus System (HBS) Compatible Transceiver
MAX22088 Simplified Home Bus System (HBS) MAX22088 Functional Diagrams MAX22088 Typical Application Circuit MAX22088 Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Design Note 2

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Software Resources

Device Drivers 1

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • MAX22088

IBIS Model 1

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
MAX22088EVKIT

Evaluation Kit for the MAX22088

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Features and Benefits

  • Evaluation of the MAX22088
  • Two On-Board Configurations, Master Circuit and Remote/Device Circuit, for Complete Homebus Evaluation
  • Robust Design with ±1kV Line-to-Line and Line-to-GND Surge Transient Immunity
  • On-Board Isolated Digital Interface for Simple Testing and Monitoring
  • Fully Assembled and Tested
  • Proven PCB Layout

Product Details

The MAX22088 evaluation kit (EV kit) provides a proven design to evaluate the MAX22088 Homebus transceiver.

The EV kit includes an evaluation board with two circuits, a master circuit, and a remote/device circuit, that can be used to demonstrate the full functionality of the MAX22088 Homebus transceiver in a complete Homebus application.

For easy evaluation, on the remote/device side, the MAX15462 5V step-down DC-DC converter is included to power external system loads at 200mA (max). In addition, the MAX12931 digital isolator is used for convenient and correct measuring of digital Homebus signals.

Applications

  • HVAC
  • Data over Power Applications
  • Digital Signage
  • Remote Monitoring and Sensing
MAX22088EVKIT
Evaluation Kit for the MAX22088
MAX22088EVKIT: Board Photo

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