The SN65HVD147x family of full-duplex transceivers feature the highest ESD protection inthe RS-485 portfolio, supporting ±16-kV IEC61000-4-2 contact discharge and > ±30-kV HBM ESDprotection. These RS-485 transceivers have robust 3.3-V drivers and receivers and are offered in astandard SOIC package as well as in a small-footprint MSOP package. The large receiver hysteresisof the SN65HVD147x devices provides immunity to conducted differential noise and the wide operatingtemperature enables reliability in harsh operating environments.
These devices each combine a differential driver and a differential receiver, whichoperate from a single 3.3-V power supply. Each driver and receiver has separate input and outputpins for full-duplex bus communication designs. These devices all feature a wide common-modevoltage range which makes the devices suitable for multi-point applications over long cableruns.
The SN65HVD1471, SN65HVD1474, and SN65HVD1477 devices are fully enabled with no externalenabling pins.
The SN65HVD1470, SN65HVD1473, and SN65HVD1476DGSR devices have active-high driver enables andactive-low receiver enables. A low, less than 5-μA standby current can be achieved by disablingboth the driver and receiver.
These devices are characterized from –40°C to 125°C.
Feature
- 1/8 Unit-Load Options Available
- Up to 256 Nodes on the Bus
- Bus I/O Protection
- > ±30 kV HBM protection
- > ±16 kV IEC61000-4-2 Contact Discharge
- > ±4 kV IEC61000-4-4 Fast Transient Burst
- Extended Industrial Temperature Range:–40°C to 125°C
- Large Receiver Hysteresis (70 mV) for Noise Rejection
- Low Power Consumption
- < 1.1 mA Quiescent Current During Operation
- Low Standby Supply Current: 10 nA Typical,< 5 μA (maximum)
- Glitch-Free Power-Up and Power-Down Protection for Hot-Plugging Applications
- 5-V Tolerant Logic Inputs Compatible With 3.3-V or 5-V Controllers
- Signaling Rate Options Optimized for:400 kbps (1470, 1471), 20 Mbps (1473, 1474), 50 Mbps (1476, 1477)
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