Analog Devices MAX3098E Product Info

• 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

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.

Applications

• 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