Overview
The THVD2450DRBR is a ±70-V fault-protected, half-duplex RS-485 transceiver produced by Texas Instruments. This device operates on a single 3-V to 5.5-V supply and is designed to meet or exceed the requirements of the TIA/EIA-485A and TIA/EIA-422B standards. It is particularly suited for high-speed data transmission up to 50 Mbps, making it ideal for various industrial and automation applications. The THVD2450DRBR features integrated IEC ESD protection, enhanced receiver noise immunity, and thermal shutdown protection, ensuring robust communication in rugged environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.5 | 7 | V | |
| Bus Voltage Range | -70 | 70 | V | |
| Input Voltage Range (D, DE, RE) | -0.3 | 5.7 | V | |
| Operating Ambient Temperature (TA) | -40 | 125 | °C | |
| Junction Temperature (TJ) | -40 | 150 | °C | |
| Signaling Rate | 50 | Mbps | ||
| Differential Output Rise/Fall Time (RL = 54 Ω, CL = 50 pF) | 5 | 7 | ns | |
| Propagation Delay (RL = 54 Ω, CL = 50 pF) | 5 | 10 | 16 | ns |
| Shutdown Current | < 1 | µA |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A and TIA/EIA-422B standards.
- Functional Safety-Capable with documentation available to aid functional safety system design.
- ±70-V DC bus fault protection and ±16-kV HBM ESD protection.
- Extended ambient temperature range: -40°C to 125°C.
- Extended operational common-mode range: ±25 V.
- Enhanced receiver hysteresis for noise immunity (250 mV typical).
- Low power consumption with low shutdown supply current (< 1 µA) and current during operation (< 5.6 mA).
- 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 to save board space or SOIC for drop-in compatibility.
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 signaling rate of the THVD2450DRBR?
The maximum signaling rate of the THVD2450DRBR is 50 Mbps.
- What is the operating voltage range of the THVD2450DRBR?
The operating voltage range is 3-V to 5.5-V.
- What kind of ESD protection does the THVD2450DRBR offer?
The device offers ±16-kV HBM ESD protection.
- What is the temperature range for the THVD2450DRBR?
The device operates over an ambient temperature range of -40°C to 125°C.
- Does the THVD2450DRBR have thermal shutdown protection?
- What is the shutdown current of the THVD2450DRBR?
The shutdown current is less than 1 µA when both the driver and receiver are disabled.
- What are the package options for the THVD2450DRBR?
The device is available in VSON, VSSOP, and SOIC packages.
- Does the THVD2450DRBR support hot plug-in capability?
- How does the receiver fail-safe operation work in the THVD2450DRBR?
The receiver is fail-safe to invalid bus states such as open bus conditions, shorted bus lines, or idle bus, causing the output to go to a logic high state.
- What is the common-mode range of the THVD2450DRBR?
The device has an extended operational common-mode range of ±25 V.
