Overview
The SN65HVD1471D, produced by Texas Instruments, is a full-duplex RS-485 transceiver that stands out for its robust ESD protection and reliability in harsh operating environments. This device is part of the SN65HVD147x family, which offers the highest ESD protection in the RS-485 portfolio. It features a single 3.3-V power supply and is available in both SOIC and MSOP packages. The transceiver combines a differential driver and a differential receiver, each with separate input and output pins, making it suitable for full-duplex bus communication designs. The SN65HVD1471D is fully enabled with no external enabling pins and operates over an extended industrial temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC-8, MSOP |
| Operating Temperature Range (°C) | –40 to 125 |
| Power Supply Voltage | 3.3 V |
| Data Rate | Up to 400 kbps |
| ESD Protection | ±16 kV IEC61000-4-2 Contact Discharge, ±30 kV HBM |
| Quiescent Current During Operation | < 1.1 mA |
| Standby Supply Current | 10 nA Typical, < 5 µA (maximum) |
| Receiver Hysteresis | 70 mV |
| Number of Nodes on the Bus | Up to 256 |
Key Features
- 1/8 Unit-Load Options Available
- Up to 256 Nodes on the Bus
- Bus I/O Protection
- High ESD Protection: ±16 kV IEC61000-4-2 Contact Discharge, ±30 kV HBM, ±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
Applications
The SN65HVD1471D is suitable for a variety of applications that require robust RS-485 communication. These include:
- Industrial Automation Systems
- Building Automation and Control Systems
- Point-of-Sale Terminals and Kiosks
- Medical Devices Requiring Reliable Communication
- Multi-Point Applications Over Long Cable Runs
Q & A
- What is the operating temperature range of the SN65HVD1471D?
The operating temperature range is –40°C to 125°C.
- What is the data rate of the SN65HVD1471D?
The data rate is up to 400 kbps.
- What type of ESD protection does the SN65HVD1471D offer?
The device offers ±16 kV IEC61000-4-2 Contact Discharge, ±30 kV HBM, and ±4 kV IEC61000-4-4 Fast Transient Burst ESD protection.
- How many nodes can be connected on the bus using the SN65HVD1471D?
Up to 256 nodes can be connected on the bus.
- What is the quiescent current during operation of the SN65HVD1471D?
The quiescent current during operation is less than 1.1 mA.
- Does the SN65HVD1471D have any external enabling pins?
No, the SN65HVD1471D is fully enabled with no external enabling pins.
- What is the receiver hysteresis of the SN65HVD1471D?
The receiver hysteresis is 70 mV.
- Is the SN65HVD1471D compatible with 5-V logic inputs?
Yes, the SN65HVD1471D has 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers.
- What are the typical standby supply current values for the SN65HVD1471D?
The typical standby supply current is 10 nA, with a maximum of less than 5 µA.
- Does the SN65HVD1471D support hot-plugging applications?
Yes, it features glitch-free power-up and power-down protection for hot-plugging applications.
