Overview
The THVD2450DGKR from Texas Instruments is a ±70-V fault-protected, half-duplex RS-485 transceiver designed to operate on a single 3.3-V to 5.5-V supply. This device is part of the THVD24x0 family, which includes the THVD2410 and THVD2450, differing primarily in their data transmission speeds. The THVD2450 supports data rates up to 50 Mbps, making it suitable for high-speed industrial communication applications. It features integrated IEC ESD protection, robust bus fault protection, and enhanced receiver noise immunity, ensuring reliable data transmission in rugged environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 3.3 to 5.5 | V |
| Bus Voltage Range | –70 to 70 | V |
| Data Rate | Up to 50 Mbps | |
| Operating Temperature | –40 to 125 | °C |
| Junction Temperature | –40 to 150 | °C |
| Differential Output Voltage | 1.5 to 3.3 | V |
| Receiver Hysteresis | 250 mV (typical) | |
| ESD Protection | ±16 kV HBM, ±12 kV IEC 61000-4-2 contact and air-gap discharge | |
| Package Options | VSON (8-pin), VSSOP (8-pin), SOIC (8-pin) | |
| Shutdown Current | < 1 µA |
Key Features
- Meets or exceeds TIA/EIA-485A and TIA/EIA-422B standards
- Functional Safety-Capable with documentation available
- ±70-V DC bus fault protection and ±16 kV HBM ESD protection
- Enhanced receiver hysteresis for noise immunity (250 mV typical)
- Low power consumption with shutdown current < 1 µA
- Glitch-free power-up/down for hot plug-in capability
- Open, short, and idle bus failsafe operation
- Thermal shutdown protection
- Small VSON and VSSOP packages for space-constrained applications
Applications
- Motor drives
- Factory automation and control
- HVAC systems
- Building automation
- Grid infrastructure
- Electricity meters
- Process analytics
- Video surveillance
Q & A
- What is the maximum data rate supported by the THVD2450DGKR?
The THVD2450DGKR supports data rates up to 50 Mbps. - What is the operating supply voltage range for the THVD2450DGKR?
The operating supply voltage range is 3.3-V to 5.5-V. - What kind of ESD protection does the THVD2450DGKR offer?
The device offers ±16 kV HBM ESD protection and ±12 kV IEC 61000-4-2 contact and air-gap discharge protection. - What are the package options available for the THVD2450DGKR?
The device is available in VSON (8-pin), VSSOP (8-pin), and SOIC (8-pin) packages. - What is the shutdown current of the THVD2450DGKR when both driver and receiver are disabled?
The shutdown current is less than 1 µA. - Does the THVD2450DGKR meet industrial communication standards?
Yes, it meets or exceeds the requirements of the TIA/EIA-485A and TIA/EIA-422B standards. - What is the receiver hysteresis of the THVD2450DGKR?
The receiver hysteresis is typically 250 mV. - Is the THVD2450DGKR suitable for high-temperature environments?
Yes, it operates over an ambient temperature range of –40°C to 125°C. - Does the THVD2450DGKR have thermal shutdown protection?
Yes, it features thermal shutdown protection that disables the driver and receiver if the junction temperature exceeds the threshold. - What are some common applications of the THVD2450DGKR?
Common applications include motor drives, factory automation, HVAC systems, building automation, grid infrastructure, electricity meters, process analytics, and video surveillance.
