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

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

Product Details

Key Features

Parametric specs for Multiprotocol Transceivers
Supported Protocols RS-232
RS-422
RS-485
# Single Ended Tx/Rx 2/2
# Diff. Tx/Rx 2/2
RS-232 Data Rate (Mbps) (max) 1
RS-485 Data Rate (Mbps) (max) 10
Functions Multiprotocol Transceiver RS-232/RS-485/RS-424
Shutdn Yes
Package/Pins SSOP/28
Budgetary
Price (See Notes)
8.85
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Simplified Block Diagram

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Parameters

Parametric specs for Multiprotocol Transceivers
Supported Protocols RS-232
RS-422
RS-485
# Single Ended Tx/Rx 2/2
# Diff. Tx/Rx 2/2
RS-232 Data Rate (Mbps) (max) 1
RS-485 Data Rate (Mbps) (max) 10
Functions Multiprotocol Transceiver RS-232/RS-485/RS-424
Shutdn Yes
Package/Pins SSOP/28
Budgetary
Price (See Notes)
8.85

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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX3160, MAX3161, MAX3162: Typical Operating Circuit MAX3160, MAX3161, MAX3162: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .