Overview
The SN65HVD72DGK from Texas Instruments is a robust 3.3-V RS-485 transceiver designed for demanding industrial applications. This device combines a differential driver and a differential receiver, operating from a single 3.3-V power supply. It is suitable for half-duplex (two-wire bus) communication and features a wide common-mode voltage range, making it ideal for multi-point applications over long cable runs. The device is characterized over an extended industrial temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | VSSOP (DGK) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40 to 125 | °C |
| Supply Voltage | 3.0 to 3.6 | V |
| Signaling Rate | Up to 250 kbps | - |
| ESD Protection | ±15 kV HBM, ±12 kV IEC 61000-4-2, ±4 kV IEC 61000-4-4 | - |
| Receiver Hysteresis | 80 mV | - |
| Quiescent Supply Current | < 1 mA | - |
| Standby Supply Current | < 2 µA | - |
| Logic Input Compatibility | 5-V tolerant, compatible with 3.3-V or 5-V controllers | - |
Key Features
- Small-size VSSOP packages save board space, or SOIC for drop-in compatibility
- Bus I/O protection with high levels of ESD protection (±15 kV HBM, ±12 kV IEC 61000-4-2, ±4 kV IEC 61000-4-4)
- Extended industrial temperature range: –40°C to 125°C
- Large receiver hysteresis (80 mV) for noise rejection
- Low unit-loading allows over 200 connected nodes
- Low power consumption with low quiescent and standby supply currents
- 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers
- Signaling rate options optimized for 250 kbps, 20 Mbps, 50 Mbps
- Glitch-free power-up and power-down bus inputs and outputs
Applications
- Factory Automation
- Telecommunications Infrastructure
- Motion Control
- Multi-point applications over long cable runs
Q & A
- What is the operating temperature range of the SN65HVD72DGK?
The operating temperature range is –40°C to 125°C.
- What is the maximum signaling rate of the SN65HVD72DGK?
The maximum signaling rate is up to 250 kbps.
- What type of ESD protection does the SN65HVD72DGK offer?
The device offers ±15 kV HBM, ±12 kV IEC 61000-4-2, and ±4 kV IEC 61000-4-4 ESD protection.
- How many nodes can be connected using the SN65HVD72DGK?
Over 200 nodes can be connected due to low unit-loading.
- Is the SN65HVD72DGK compatible with 5-V logic inputs?
- What is the quiescent supply current of the SN65HVD72DGK?
The quiescent supply current is less than 1 mA.
- What is the standby supply current of the SN65HVD72DGK?
The standby supply current is less than 2 µA.
- Does the SN65HVD72DGK support glitch-free power-up and power-down?
- What are the typical applications of the SN65HVD72DGK?
The device is typically used in factory automation, telecommunications infrastructure, and motion control.
- What is the package type of the SN65HVD72DGK?
The package type is VSSOP (DGK) with 8 pins.
