Overview
The SN65HVD78DGK, manufactured by Texas Instruments, is a 3.3-V supply half-duplex 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 characterized by its robust ESD protection, extended industrial temperature range, and low power consumption, making it suitable for a variety of industrial and telecommunications environments.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Supply Voltage | 3-V to 3.6-V | 3-V to 3.6-V |
| Package Type | VSSOP (8-pin) | VSSOP (8-pin) |
| Body Size | 3.00 mm × 3.00 mm | 3.00 mm × 3.00 mm |
| Operating Temperature Range | –40°C to 125°C | –40°C to 125°C |
| Signaling Rate Options | 250 kbps, 20 Mbps, 50 Mbps | 250 kbps, 20 Mbps, 50 Mbps |
| ESD Protection | ±4 kV IEC 61000-4-4 Fast Transient Burst | ±4 kV IEC 61000-4-4 Fast Transient Burst |
| Quiescent Current | < 1 mA | < 1 mA |
| Standby Supply Current | < 2 µA | < 2 µA |
| Receiver Hysteresis | 80 mV | 80 mV |
Key Features
- Robust 3.3-V drivers and receivers with high levels of ESD protection to Human-Body Model and IEC Contact Discharge specifications.
- Extended industrial temperature range from –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 quiescent current < 1 mA and standby supply current < 2 µA.
- 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers.
- Glitch-free power-up and power-down bus inputs and outputs.
Applications
- Factory Automation
- Telecommunications Infrastructure
- Motion Control
Q & A
- What is the operating voltage of the SN65HVD78DGK?
The SN65HVD78DGK operates from a 3-V to 3.6-V supply voltage. - What is the package type of the SN65HVD78DGK?
The SN65HVD78DGK is available in an 8-pin VSSOP package. - What is the temperature range for the SN65HVD78DGK?
The device operates over an extended industrial temperature range from –40°C to 125°C. - What are the signaling rate options for the SN65HVD78DGK?
The device supports signaling rates of 250 kbps, 20 Mbps, and 50 Mbps. - What level of ESD protection does the SN65HVD78DGK offer?
The device offers ±4 kV IEC 61000-4-4 Fast Transient Burst ESD protection. - How many nodes can be connected using the SN65HVD78DGK?
The device allows for over 200 connected nodes due to its low unit-loading. - Is the SN65HVD78DGK compatible with 5-V logic inputs?
Yes, the device has 5-V tolerant logic inputs compatible with 3.3-V or 5-V controllers. - What is the quiescent current of the SN65HVD78DGK?
The quiescent current is less than 1 mA. - What is the standby supply current of the SN65HVD78DGK?
The standby supply current is less than 2 µA. - What is the receiver hysteresis of the SN65HVD78DGK?
The receiver hysteresis is 80 mV.
