Part Number Description Mode Tx/Rx Vsupply (V) Data Rate (min) (kbps) ESD Protect. (±kV) Tx EN Rx EN Icc (Shutdown) (typ) (µA) Features state Cross Reference Pin/Package
AT3160 RS-232/RS-485/422 multiprotocol trans- ceivers. RS-422 RS-485 RS-232 2Tx+2Rx 3~5.5 250 15 Yes Yes 1 Programmable multiprotocol transceiver Prod MAX3160


     The AT3160/AT3161/AT3162 are programmable RS-232/RS-485/422 multiprotocol transceivers. The AT3160/AT3161 are pin programmable as a 2TX/2RX RS-232 interface or a single RS-485/422 transceiver. The AT3162 is configured as a 2TX/2RX RS-232 interface and a single RS-485/422 transceiver simultaneously.

     All devices incorporate a proprietary low-dropout transmitter output stage and an on-board dual charge pump to allow RS-232 and RS-485/422 compliant performance from a +3V to +5.5V supply. These devices also feature pin-selectable transmitter slew rates for both RS-232 and RS-485/422 modes. Slew-rate limiting minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. Disabling slew-rate limiting allows these devices to transmit at data rates up to 10Mbps in RS-485/422 mode and up to 1Mbps in RS-232 mode.  

       The AT3160/AT3162 offer a flow-through pinout that facilitates board layout. The  The AT3160/AT3161/AT3162 are available in tiny SSOP packages and operate from -40°C to +85°C.


    Flexible Options for RS-232 and RS-422/485 Operation in One Package

    -Simultaneous 2TX/2RX RS-232 and Half-Duplex

    -RS-485 Transceiver Operation (MAX3162)

    -Pin-Programmable as Either 2TX/2RX RS-232 or Half/Full RS-485 Transceiver (MAX3160, MAX3161)

    Integrated Protection Increases Robustness

    -Transmitters and Receivers Protected Against Wiring Faults

    -True Fail-Safe Receiver Prevents False Transition on Receiver Input Short or Open

    -Short-Circuit Protection Over the Entire Common- Mode Voltage Range

    -Thermal Protection from Excessive Power Dissipation

    -Slew Rate Limiting Minimizes EM and Reduces Cable Reflections

    Integrated Charge-Pump Circuitry Saves Board Space

    -Eliminates the Need for a Bipolar ±12V Supply

    -Enables Single-Supply Operation From +3V to +5.5V Voltage Supply

    1µA Shutdown Supply Current Saves Power

    Allows Up to 256 Transceivers on the Bus


    Point-of-sales Equipment


    industrial Controls

    RS-232 to RS-485

    Interface Converters



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