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MAX3162

MAX3162

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

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

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Overview

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.
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

Applications/Uses

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

Parametric Specs

See parametric specs for Multiprotocol Transceivers (17)


Part NumberFunctionsRS-232 Data Rate
(Mbps)		RS-485 Data Rate
(Mbps)		Single Ended Tx/RxDiff. Tx/RxShutdnSupported ProtocolsRx Glitch RejectionTx Fault Protect.On Chip Charge PumpICC
(mA)		ICC (Shutdown)
(µA)		Package/PinsBudgetary
Price
(max)(max)(max)(See Notes)
MAX3160 Multiprotocol Transceiver RS-232/RS-485/RS-4221102/22/2Yes
RS-232
RS-422
RS-485
NoYesYes5.51
SSOP/20
$8.35 @1k
MAX3161 Multiprotocol Transceiver RS-232/RS-485/RS-4235.5
SSOP/24
MAX3162 Multiprotocol Transceiver RS-232/RS-485/RS-4246
SSOP/28

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.

Design Resources


MAX3162EVKIT: Evaluation Kit for the MAX3162

Technical Documents

App Note 4554 RS-485 Adapter Converts Data Lines from Full- to Half-Duplex
Tutorial 723 Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards

Quality And Environmental

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.

Quality Management System >
Environmental Management System >

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Technical Docs

Reference Designs

Type ID Title
Evaluation Board6417MAX3162EVKIT Evaluation Kit for the MAX3162