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.