±15kV ESD-Protected, 32Mbps, 3V/5V,Triple RS-422/RS-485 Receivers with Fault Detection

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The MAX3097E/MAX3098E feature three high-speed RS-485/RS-422 receivers with fault-detection circuitry and fault-status outputs. The receivers' inputs have fault thresholds that detect when the part is not in a valid state.

The MAX3097E/MAX3098E indicate when a receiver input is in an open-circuit condition, short-circuit condition, or outside the common-mode range. They also generate a fault indication when the differential input voltage goes below a preset threshold. See Ordering Information or the Electrical Characteristics in the full data sheet for threshold values.

The fault circuitry includes a capacitor-programmable delay to ensure that there are no erroneous fault conditions even at slow edge rates. Each receiver is capable of accepting data at rates up to 32Mbps.
MAX3097E, MAX3098E: Typical Application Circuit MAX3097E, MAX3098E: Typical Application Circuit Enlarge+

Key Features

  • Detects the Following RS-485 Faults:
    • Open-Circuit Condition
    • Short-Circuit Condition
    • Low Differential Voltage Signal
    • Common-Mode Range Violation
  • ESD Protection
    • ±15kV—Human Body Model
    • ±15kV—IEC 1000-4-2, Air-Gap Discharge Method
    • ±8kV—IEC 1000-4-2, Contact Discharge Method
  • Single +3V to +5.5V Operation
  • -10V to +13.2V Extended Common-Mode Range
  • Capacitor-Programmable Delay of Fault Indication Allows Error-Free Operation at Slow Data Rates
  • Independent and Universal Fault Outputs
  • 32Mbps Data Rate
  • 16-Pin QSOP is 40% Smaller than Industry-Standard 26LS31/32 Solutions


  • Embedded Systems
  • High-Speed, Triple RS-485/RS-422 Receiver with Extended Electrostatic Discharge (ESD)
  • RS-485/RS-422 Receivers for Motor-Shaft Encoders
  • Telecommunications
  • Triple RS-485/RS-422 Receiver with Input Fault Indication
Part NumberTx/RxVSUPPLY
Data Rate
Tx ENRx ENRx/Tx on BusRx Failsafe w/ InputsSlew Rate LimitingOper. Temp.
typminSee Notes
MAX3097E 3Rx
3.0 to 5.5
3.132000NoNo240Open or ShortedNo
-40 to +85
0 to +70
SOIC (N)/16
$4.79 @1k
SOIC (N)/16
$4.61 @1k
See All RS-485/RS-422 Line Driver/Receivers (205)
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.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

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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