Overview
The SN65HVD1780DRG4 is a 70-V fault-protected RS-485 transceiver manufactured by Texas Instruments. This device is designed to provide robust and reliable communication in harsh environments, making it suitable for a wide range of industrial and commercial applications. It combines a differential driver and a differential receiver, operating from a single power supply, and is fully compliant with the ANSI TIA/EIA 485-A standard. The SN65HVD1780DRG4 is available in an 8-pin SOIC package and operates over a temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (8-pin) | - |
| Body Size | 4.90 mm × 3.91 mm | - |
| Operating Temperature Range | -40°C to 125°C | - |
| Supply Voltage Range | 3.3 V to 5 V | V |
| Driver Output Voltage | Up to 5 V (reduced for 3.3 V supply) | V |
| Common-Mode Voltage Range | Up to ±70 V | V |
| Data Rate | Up to 1 Mbps | - |
| ESD Protection | ±16 kV Human Body Model (HBM) | - |
Key Features
- Fault Protection: The device is designed to survive overvoltage faults up to ±70 V and mis-wiring faults, cable crushes, and tool mis-applications.
- ESD Protection: Internal ESD protection circuits protect the transceiver bus terminals against ±16 kV human body model (HBM) electrostatic discharges.
- Hot-Plugging Capability: The device is designed for hot swap or hot pluggable applications with power-up and power-down glitch-free operation and default disabled input and output pins.
- Receiver Failsafe: Internal biasing of the receiver input thresholds ensures the receiver output remains logic high under bus-idle, bus-short, or open bus conditions.
- Compliance: Fully compliant with ANSI TIA/EIA 485-A standard.
Applications
The SN65HVD1780DRG4 is suitable for various applications requiring robust RS-485 communication, including:
- Industrial automation and control systems.
- Building automation and HVAC systems.
- Medical devices and equipment.
- Aerospace and defense systems.
- Automotive systems, especially those requiring high reliability and fault tolerance.
Q & A
- What is the operating temperature range of the SN65HVD1780DRG4?
The operating temperature range is -40°C to 125°C. - What is the maximum data rate supported by the SN65HVD1780DRG4?
The device supports data rates up to 1 Mbps. - Is the SN65HVD1780DRG4 compliant with any industry standards?
Yes, it is fully compliant with the ANSI TIA/EIA 485-A standard. - What type of ESD protection does the SN65HVD1780DRG4 offer?
The device offers ±16 kV Human Body Model (HBM) ESD protection. - Can the SN65HVD1780DRG4 operate in hot-plugging applications?
Yes, it is designed for hot swap or hot pluggable applications with glitch-free operation. - What is the common-mode voltage range of the SN65HVD1780DRG4?
The device can handle common-mode voltages up to ±70 V. - What are the supply voltage options for the SN65HVD1780DRG4?
The device operates with supply voltages ranging from 3.3 V to 5 V. - Is the SN65HVD1780DRG4 pin-compatible with any other transceivers?
Yes, it is pin-compatible with the industry-standard SN75176 transceiver. - What kind of fault protection does the SN65HVD1780DRG4 offer?
The device is designed to survive overvoltage faults up to ±70 V and other types of faults such as mis-wiring and cable crushes. - Does the SN65HVD1780DRG4 require external failsafe biasing resistors?
No, it provides internal biasing of the receiver input thresholds, eliminating the need for external failsafe biasing resistors.
