Overview
The SN65HVD1786DG4, manufactured by Texas Instruments, is a fault-protected RS-485 transceiver designed for robust communication in industrial and automotive applications. This component is part of the SN65HVD17xx family, which is known for its extended common-mode range and high fault tolerance. The SN65HVD1786DG4 is particularly suitable for environments where reliability and durability are critical, such as industrial automation, building control systems, and long-distance communication networks.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 4.5 - 5.5 | V | |
| Operating Temperature | -40 to 105 | °C | |
| Common Mode Range | -20 to +25 | V | Exceeds TIA/EIA-485 standards |
| Fault Protection | ±70 | V | Bus pin protection |
| ESD Protection | ±16 | kV | JEDEC HBM |
| Data Rate | Up to 32 | Mbps | |
| Package | 8-SOIC | Surface mount |
Key Features
- Extended common-mode voltage range (-20V to +25V), ideal for long-distance communication.
- Bus pin fault protection up to ±70V, ensuring reliability in harsh environments.
- ESD protection of ±16kV (HBM) for enhanced durability against electrostatic discharge.
- Low power consumption with a standby current of 1µA, making it suitable for energy-efficient designs.
- Designed for half-duplex communication, supporting up to 256 nodes on a single bus.
Applications
The SN65HVD1786DG4 is widely used in various industrial and commercial applications, including:
- Industrial Automation: Reliable communication in factory automation systems, PLCs, and motor control.
- Building Control Systems: HVAC, lighting, and security systems requiring robust data transmission.
- Automotive Electronics: Vehicle networks and diagnostics systems.
- Long-Distance Communication: RS-485 networks in infrastructure and utility monitoring.
Q & A
1. What is the operating voltage range of the SN65HVD1786DG4?
The operating voltage range is 4.5V to 5.5V.
2. What is the maximum data rate supported by this transceiver?
It supports data rates up to 32 Mbps.
3. What is the common-mode voltage range of the SN65HVD1786DG4?
The common-mode voltage range is -20V to +25V.
4. How does the fault protection feature work?
The device provides ±70V fault protection on bus pins, safeguarding against overvoltage conditions.
5. What is the ESD protection level of this transceiver?
It offers ±16kV ESD protection (JEDEC HBM).
6. What is the package type of the SN65HVD1786DG4?
It comes in an 8-SOIC surface-mount package.
7. Is this transceiver suitable for half-duplex communication?
Yes, it is designed for half-duplex communication.
8. What is the standby current consumption?
The standby current is typically 1µA.
9. Can this transceiver operate in extreme temperatures?
Yes, it operates in a temperature range of -40°C to 105°C.
10. How many nodes can be supported on a single bus?
It supports up to 256 nodes on a single bus.
