Overview
The SN65HVD1474DGKR is a 3.3V full-duplex RS-485 transceiver manufactured by Texas Instruments. Designed for robust communication in industrial environments, this component supports high-speed data transmission up to 20 Mbps and features exceptional ESD protection, making it suitable for applications requiring reliable long-distance communication. Its market positioning targets industrial automation, automotive, and communication systems, offering a competitive edge with its low power consumption, wide temperature range, and compatibility with both 3.3V and 5V controllers.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 3.3 | V | |
| Data Rate | 20 | Mbps | |
| ESD Protection (IEC 61000-4-2) | ±16 | kV | Contact Discharge |
| ESD Protection (HBM) | > ±30 | kV | |
| Operating Temperature | -40 to 125 | °C | |
| Number of Nodes | 256 | Max | |
| Receiver Hysteresis | 70 | mV | |
| Quiescent Current | <1.1 | mA | During Operation |
| Standby Current | <5 | µA | Max |
| Package | MSOP-8 |
Key Features
- Full-duplex RS-485 communication with 20 Mbps data rate.
- Exceptional ESD protection: ±16 kV IEC 61000-4-2 contact discharge and > ±30 kV HBM.
- Wide operating temperature range: -40°C to 125°C, ensuring reliability in harsh environments.
- Low power consumption: <1.1 mA quiescent current and <5 µA standby current.
- 5V-tolerant logic inputs compatible with 3.3V or 5V controllers.
- No external enable pin required for operation.
- Large receiver hysteresis (70 mV) for noise immunity.
Applications
The SN65HVD1474DGKR is widely used in industrial automation, automotive electronics, and communication systems. Its robust design and high ESD protection make it ideal for long-distance data transmission in noisy environments. Specific applications include factory automation, motor control, HVAC systems, and multi-drop networks. Its low power consumption and wide temperature range also make it suitable for battery-powered and outdoor applications.
Q & A
1. What is the maximum data rate supported by the SN65HVD1474DGKR?
The SN65HVD1474DGKR supports a maximum data rate of 20 Mbps.
2. What is the operating voltage range of this transceiver?
It operates at a supply voltage of 3.3V.
3. How many nodes can be connected to the bus?
Up to 256 nodes can be connected to the bus.
4. What is the ESD protection level of this device?
It provides ±16 kV IEC 61000-4-2 contact discharge and > ±30 kV HBM ESD protection.
5. Is an external enable pin required for operation?
No, the SN65HVD1474DGKR does not require an external enable pin.
6. What is the typical quiescent current during operation?
The typical quiescent current is less than 1.1 mA.
7. What is the standby current of the device?
The standby current is less than 5 µA (maximum).
8. What is the operating temperature range?
It operates in a temperature range of -40°C to 125°C.
9. Is the device compatible with 5V controllers?
Yes, it features 5V-tolerant logic inputs, making it compatible with both 3.3V and 5V controllers.
10. What is the receiver hysteresis value?
The receiver hysteresis is 70 mV, providing noise immunity.
