MAX3071E

+3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers

±15kV ESD-Protected, +3.3V, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers


Please check latest availability status for a specific part variant.

Description

The MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected, RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3070E–MAX3079E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.

The MAX3070E/MAX3071E/MAX3072E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX3073E/MAX3074E/MAX3075E also feature slew-rate-limited drivers but allow transmit speeds up to 500kbps. The MAX3076E/MAX3077E/MAX3078E driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX3079E slew rate is pin selectable for 250kbps, 500kbps, and 16Mbps.

The MAX3072E/MAX3075E/MAX3078E are intended for half-duplex communications, and the MAX3070E/MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX3077E are intended for full-duplex communications. The MAX3079E is selectable for half-duplex or full-duplex operation. It also features independently programmable receiver and transmitter output phase through separate pins.

The MAX3070E-MAX3079E transceivers draw 800µA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.

MAX3070E, MAX3071E, MAX3072E, MAX3073E, MAX3074E, MAX3075E, MAX3076E, MAX3077E, MAX3078E, MAX3079E: Pin Configurations and Typical Operating Circuits MAX3070E, MAX3071E, MAX3072E, MAX3073E, MAX3074E, MAX3075E, MAX3076E, MAX3077E, MAX3078E, MAX3079E: Pin Configurations and Typical Operating Circuits Enlarge+

Key Features

  • Protection for Robust Performance
    • ±15kV Human Body Model ESD on I/O Pins
    • True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
    • Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission (MAX3070E-MAX3075E/MAX3079E)
    • Hot-Swap Input Structure on DE and Active-Low RE
  • Flexible Feature Set for Ease of Design
    • Pin-Selectable Full/Half-Duplex Operation (MAX3079E)
    • Phase Controls to Correct for Twisted-Pair Reversal (MAX3079E)
    • Allows up to 256 Transceivers on the Bus
    • Available in Industry-Standard SO and DIP packages
  • 10µA Shutdown Current Mode for Power Savings (Except MAX3071E/MAX3074E/MAX3077E)

Applications/Uses

  • Industrial Control
  • Instrumentation
  • Lighting Systems
  • Security Systems
  • Telecom
Product Reliability Reports: MAX3071E.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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