Overview
The SN65HVD71DR, produced by Texas Instruments, is a 3.3-V full-duplex RS-485 transceiver designed for robust and reliable data transmission in various industrial and commercial applications. This device combines a differential driver and a differential receiver, operating from a single 3.3-V power supply, making it suitable for full-duplex bus communication designs. The SN65HVD71DR is part of the SN65HVD7x family, which offers high levels of ESD protection and immunity to conducted differential noise, ensuring reliability in harsh operating environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3.0 to 3.6 | V |
| Operating Temperature Range | –40 to 125 | °C |
| Signaling Rate | Up to 400 kbps | |
| Package Type | SOIC-8, MSOP-8 | |
| Bus Pin Voltage Range | –13 to 16.5 | V |
| Quiescent Current | < 1.1 mA | |
| Standby Supply Current | < 5 µA | |
| ESD Protection | ±30-kV HBM, ±12-kV IEC61000-4-2 | |
| Receiver Hysteresis | 70 mV |
Key Features
- 1/8 Unit-load options available, supporting up to 256 nodes on the bus.
- High levels of ESD protection: > ±30-kV HBM and > ±12-kV IEC61000-4-2 contact discharge.
- Large receiver hysteresis (70 mV) for noise rejection.
- Low power consumption: < 1.1-mA quiescent current during operation and low standby supply current (< 5 µA).
- 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.
- Extended industrial temperature range: –40°C to 125°C.
- Full-duplex operation with separate input and output pins for driver and receiver.
Applications
The SN65HVD71DR is suitable for a variety of applications, including industrial automation, process control systems, building automation, and any environment requiring reliable and robust RS-485 communication. It is particularly useful in multi-point applications over long cable runs due to its wide common-mode voltage range and high immunity to noise.
Q & A
- What is the operating voltage range of the SN65HVD71DR?
The operating voltage range is 3.0 to 3.6 V. - What is the maximum signaling rate of the SN65HVD71DR?
The maximum signaling rate is up to 400 kbps. - What types of packages are available for the SN65HVD71DR?
The device is available in SOIC-8 and MSOP-8 packages. - What is the operating temperature range of the SN65HVD71DR?
The operating temperature range is –40°C to 125°C. - How much ESD protection does the SN65HVD71DR offer?
The device offers > ±30-kV HBM and > ±12-kV IEC61000-4-2 contact discharge ESD protection. - What is the quiescent current of the SN65HVD71DR during operation?
The quiescent current is less than 1.1 mA. - Can the SN65HVD71DR be used in hot-plugging applications?
Yes, it features glitch-free power-up and power-down protection for hot-plugging applications. - Is the SN65HVD71DR compatible with 5-V logic inputs?
Yes, it has 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers. - How many nodes can be supported on the bus with the SN65HVD71DR?
Up to 256 nodes can be supported on the bus. - What is the receiver hysteresis of the SN65HVD71DR?
The receiver hysteresis is 70 mV.
