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CS485M

CS485M

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RS-485 Transceiver

The CS485 family of devices are low-power half-duplex transceivers for RS-485/RS-422 communications in harsh environments. All devices feature ±18kV electro-static discharge (ESD) protection for the bus pins (A and B), eliminating the need for additional system level protection components.

The CS485 family of devices contain one driver(TX) and one receiver(RX), operates over the +3.0V to +5.5V supply range, making these devices convenient for designers to use one part with either +3.3V or +5V supply systems. These devices are specified for data rates up to 250kbps, also include fail safe circuitry, guaranteeing a logic-high receiver output when the receiver inputs are shorted or open. All devices are specified over the -40°C to +125°C wide operating temperature range and are available in small 8- pin MSOP package for space constrained applications and 8-pin SOIC for drop-in compatibility design.

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  • Features

    High-Performance and Compliant with RS-485 EIA/TIA-485 Standard

    Low EMI 250kbps Data Rate
    Allow up to 50 Nodes on the Same Bus

    Integrated Protection for Robust Communication

    -7V to +12V Common-Mode Voltage Range
    ±18kV Human Body Model ESD Protection and ±4kV Contact Discharge IEC 61000-4-2 ESD Protection on A/B pins
    Short-Circuit Protection
    Thermal Shutdown
    True Fail-Safe Guarantees Known Receiver Output State
    Glitch-free

    Low Power

    Low Supply Current (0.95mA, typ.)
    Shutdown Current < 5µA

    3V to 5.5V Supply Voltage Range

    Wide Operating Temperature Range

    –40°C to 125°C

    8 pin SOIC and 8 pin MSOP Packages

  • Applications

    • Factory Automation & Control

    • Grid Infrastructure

    • Home and Building Automation

    • Video Surveillance

    • Smart Meters

    • Process Control

    • Telecommunication Equipment

  • Device Information

    Part numberPackagePackage size (NOM)  
    CS485SSOIC84.9mm × 3.9mm
    CS485MMSOP83mm × 3mm

  • Simplified Functional Diagram

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