Overview
The SN65HVD73DGS is a 3.3-V full-duplex RS-485 transceiver produced by Texas Instruments. This device is part of the SN65HVD7x family, which extends the RS-485 portfolio with robust drivers and receivers offering high levels of ESD protection. The SN65HVD73DGS 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. It features a wide common-mode voltage range, enabling reliability in multi-point applications over long cable runs and in harsh operating environments with temperatures ranging from –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | –0.5 to 5 | V |
| Operating Temperature Range | –40 to 125 | °C |
| Signaling Rate | Up to 20 Mbps | Mbps |
| ESD Protection | ±30-kV HBM, ±12-kV IEC61000-4-2 contact discharge, ±4-kV IEC61000-4-4 fast transient burst | kV |
| Quiescent Current | < 1.1 mA | mA |
| Standby Supply Current | < 5 µA (maximum) | µA |
| Package Type | VSSOP (DGS) | - |
| Number of Pins | 10 | - |
Key Features
- 1/8 Unit-load options available
- Up to 256 nodes on the bus
- Bus I/O protection
- High levels of ESD protection: ±30-kV HBM, ±12-kV IEC61000-4-2 contact discharge, ±4-kV IEC61000-4-4 fast transient burst
- Large receiver hysteresis (70 mV) for noise rejection
- Low power consumption: < 1.1-mA quiescent current during operation
- Low standby supply current: < 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
- Active-high driver enables and active-low receiver enables
Applications
The SN65HVD73DGS is suitable for various applications requiring reliable and robust RS-485 communication. These include:
- Industrial automation and control systems
- Building automation and HVAC systems
- Point-of-sale terminals and other commercial equipment
- Medical devices requiring reliable communication
- Automotive systems where harsh environments are common
Q & A
- What is the operating temperature range of the SN65HVD73DGS?
The operating temperature range is from –40°C to 125°C.
- What is the maximum signaling rate of the SN65HVD73DGS?
The maximum signaling rate is up to 20 Mbps.
- What level of ESD protection does the SN65HVD73DGS offer?
The device offers ±30-kV HBM, ±12-kV IEC61000-4-2 contact discharge, and ±4-kV IEC61000-4-4 fast transient burst ESD protection.
- What is the quiescent current of the SN65HVD73DGS during operation?
The quiescent current is less than 1.1 mA.
- Can the SN65HVD73DGS be used in hot-plugging applications?
- What is the package type and number of pins for the SN65HVD73DGS?
The package type is VSSOP (DGS) with 10 pins.
- Is the SN65HVD73DGS compatible with 5-V logic inputs?
- How many nodes can be supported on the bus with the SN65HVD73DGS?
- What is the typical standby supply current of the SN65HVD73DGS?
- Does the SN65HVD73DGS have active enabling pins for the driver and receiver?
