1FEATURES
• 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

APPLICATIONS
• Telecommunications Equipment
• Industrial Automation
• Process Automation
• Building Automation
• Point-of-Sale (POS) Terminals
• Improved Replacement for ADM3076,
ADM3491, LTC2852, MAX3491 and SP3491

DESCRIPTION
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.