3.3 V Full-Duplex RS-485 Transceivers


3.3 V Full-Duplex RS-485 Transceivers

33 V Full Duplex RS 485 Transceivers

The SN65HVD37 combines a robust differential driver and a receiver with high noise immunity for demanding industrial applications. The driver differential outputs and the receiver differential inputs are separate pins, to form a bus port for full-duplex (four-wire) communications. The driver and receiver can be independently enabled, and feature a wide common-mode voltage range, making this device suitable for multi-point applications over long cable runs. The SN65HVD37 is characterized over the temperature range of –40ºC to 85 ºC.

Device Uses
  • Telecommunications Equipment
  • Industrial Automation
  • Process Automation
  • Building Automation
  • Point-of-Sale (POS) Terminals
  • Improved Replacement for ADM3076, ADM3491, LTC2852, MAX3491 and SP3491
Features
  • Low-Current Standby Mode: <1 µA Typical
  • Operational Quiescent Current < 1 mA
  • High Receiver Hysteresis for Noise Immunity (60 mV Typical)
  • 1/8 Unit-Load (Up to 256 Nodes on the Bus)
  • Bus-pin ESD Protection Exceeds 15 kV HBM
  • Driver Output Transition Times Optimized for Signaling Rate up to 20 Mbps
  • Glitch-Free Power-Up and Power-Down Protection for Hot-Plugging Applications
  • 5V-Tolerant Logic Inputs
  • Bus Idle, Open, and Short-Circuit Failsafe
  • Driver Current Limiting and Thermal Shutdown
  • Fully Meets All TIA-485-A Specifications

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