+3.0V to +5.5V, 1µA, RS-232/RS-485/422 Multiprotocol Transceivers

Industry's-First +3V, 1µA Multiprotocol Interface Solution

Please check latest availability status for a specific part variant.


The MAX3160/MAX3161/MAX3162 are programmable RS-232/RS-485/422 multiprotocol transceivers. The MAX3160/MAX3161 are pin programmable as a 2TX/2RX RS-232 interface or a single RS-485/422 transceiver. The MAX3162 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 MAX3160/MAX3162 offer a flow-through pinout that facilitates board layout. The MAX3160/MAX3161/MAX3162 are available in tiny SSOP packages and operate from -40°C to +85°C.
MAX3160, MAX3161, MAX3162: Typical Operating Circuit MAX3160, MAX3161, MAX3162: Typical Operating Circuit Enlarge+

Key Features

  • 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


  • Industrial Controls
  • Networking
  • Peripherals
  • Point-of-Sale Equipment
  • RS-232 to RS-485 Interface Converters

See parametric specs for Multiprotocol Transceivers (17)

Part NumberFunctionsRS-232 Data Rate
RS-485 Data Rate
Single Ended Tx/RxDiff. Tx/RxShutdnSupported ProtocolsRx Glitch RejectionTx Fault Protect.On Chip Charge PumpICC
ICC (Shutdown)
(max)(max)(max)(See Notes)
MAX3160 Multiprotocol Transceiver RS-232/RS-485/RS-4221102/22/2Yes
$8.35 @1k
MAX3161 Multiprotocol Transceiver RS-232/RS-485/RS-4235.5
MAX3162 Multiprotocol Transceiver RS-232/RS-485/RS-4246

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX3162EVKIT: Evaluation Kit for the MAX3162
Product Reliability Reports: MAX3162.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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