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CA-IF4905S

CA-IF4905S

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RS-485 Transceiver

The CA-IF4905S is the high-performance half-duplex RS-485 transceiver which could be used in harsh industrial and home-appliance environments. The bus pins could withstand high-level ESD events to protect internal circuit without damage. This device has ±65V fault protection on bus pins, and the common-mode range (CMR) could be extended to ±40V when VCC ranges from 4.5V to 5.5V, which is suitable for long-cable communication applications. Each device contains one driver and one receiver, supporting the power supply range from 3V to 5.5V. 

The CA-IF4905S features slew-rate-limited driver for low EMI and date rates up to 500kbps. This device integrates failsafe circuit to guarantee a logical high on the receiver output when the bus inputs are open, short or on idle state. This device features a 1/8 unit load input impedance, allowing up to 256 transceivers on a bus. 

The CA-IF4905S devices are packaged in narrow body, 8-pin SOIC packages and specified over ambient free-air temperature range of –40°C to 125°C.

  • Features

    Meets or Exceeds the Requirements of the TIA/EIA485A Standard

    Low EMI 500kbps Data Rate

    3V to 5.5V Supply Voltage

    Driver with Current Limiter and Thermal Shutdown Protection

    Bus Pins ESD Protection

    ±30kV HBM ESD
    ±6kV IEC 61000-4-2 Contact Discharge

    1/8 Unit Load (Up to 256 Bus Nodes)

    Open, Short and Idle Bus Failsafe Protection

    Hot Plug-in Protection

    Extended Industrial Temperature Range: –40°C to 125°C

    ±65V Fault Protection on Bus Pins

    ±40V Common Mode Range on Bus Pins

    Low Standby Current

    <30µA

    Standard SOIC8 Narrow Body Package

  • Applications

    • HVAC

    • Home and Building Automation

    • Motion Controllers

    • Industrial Automation

    • Elevator Control

    • Video Surveillance

    • Power Grid Infrastructure