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CS48505AS

CS48505AS

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RS-485 Transceiver

The CS485xxA family of devices are low-power half-duplex transceivers for RS-485/RS-422 communications in harsh environments. All devices feature ±20kV electro-static discharge (ESD) protection for the bus pins (A and B), eliminating the need for additional system level protection components.

The CS485xxA family of devices contain one driver(TX) and one receiver(RX), operates over the +3V to +5.5V supply range, making these devices convenient for designers to use one part with either +3.3V or +5V supply systems. The CS48520Ax devices can transmit and receive at data rate up to 20Mbps, while the CS48505Ax devices are specified for data rate up to 500kbps. These devices 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, 8-pin DFN packages 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 500kbps Data Rate (CS48505Ax) and up to 20Mbps (CS48520Ax) High-Speed Data Rate
    1/8 Unit Load Enables up to 256 Nodes on the Same Bus

    Integrated Protection for Robust Communication

    -7V to +12V Common-Mode Voltage Range
    ±20kV Human Body Model ESD Protection and ±6kV 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 during Power on/Power off

    Output Level is Compatible with Profibus Standard

    |VOD| > 2.1V @ 5V Supply Voltage

    Low Power

    Low Supply Current (0.9mA, typ.)
    Shutdown Current < 5µA

    3V to 5.5V Supply Voltage Range

    Wide Operating Temperature Range

    –40°C to 125°C

    8 pin SOIC

    8 pin MSOP and 8 pin DFN 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)

    CS48505AD 

    CS48520AD

    		DFN83mm × 3mm

    CS48505AM 

    CS48520AM

    		MSOP8

    CS48505AS 

    CS48520AS

    		SOIC84.9mm × 3.9mm

  • Simplified Functional Diagram

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