Overview
The THVD2450DR is a high-speed, low-power RS-485/RS-422 transceiver chip manufactured by Texas Instruments. It is specifically designed for industrial communication protocols, offering reliable and robust data transmission over long distances. This device operates on a single 3-V to 5.5-V supply and is capable of data rates up to 50 Mbps, making it suitable for applications requiring swift and secure data communication.
The THVD2450DR features integrated IEC ESD protection, eliminating the need for external system-level protection components. It also includes bus I/O protection against overvoltage conditions, ensuring robust communication in rugged industrial environments.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Number of receivers | 1 | Number of transmitters | 1 |
| Duplex | Half | Supply voltage (nom) (V) | 3.3, 5 |
| Signaling rate (max) (Mbps) | 50 | IEC 61000-4-2 contact (±V) | ±12,000 |
| Fault protection (V) | ±70 | Common-mode range (V) | ±25 |
| Number of nodes | 256 | Features | Extended common mode, Fault protection, IEC ESD protection |
| Isolated | No | Supply current (max) (µA) | 5,600 |
| Operating temperature range (°C) | -40 to 125 | Junction temperature (°C) | -40 to 150 |
| Package | SOIC (D)-8 | Pins | 8 |
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
- 3-V to 5.5-V supply voltage range
- Differential output exceeds 2.1 V for PROFIBUS compatibility with 5-V supply
- Bus I/O protection: ±70-V DC bus fault, ±16-kV HBM ESD, ±12-kV IEC 61000-4-2 contact and air-gap discharge, ±4-kV IEC 61000-4-4 fast transient burst
- Half-duplex device with a data rate of up to 50 Mbps
- Extended ambient temperature range: -40°C to 125°C
- Extended operational common-mode range: ±25 V
- Enhanced receiver hysteresis for noise immunity
- Low power consumption: Low shutdown supply current (< 1 µA), Current during operation (< 5.6 mA)
- Glitch-free power-up/down for hot plug-in capability
- Open, short, and idle bus failsafe
- Thermal shutdown
- 1/8 unit load (up to 256 bus nodes)
- Compact packages: SOIC, VSSOP, and VSON to save board space
Applications
- Industrial automation and control
- Motor drives
- HVAC systems
- Building automation
- Grid infrastructure
- Electricity meters
- Process analytics
- Video surveillance
- Automotive systems
- Manufacturing equipment
Q & A
- What is the maximum data rate of the THVD2450DR?
The THVD2450DR has a maximum data rate of 50 Mbps.
- What is the supply voltage range for the THVD2450DR?
The supply voltage range is from 3 V to 5.5 V.
- What kind of ESD protection does the THVD2450DR offer?
The device features integrated IEC ESD protection, including ±16-kV HBM ESD, ±12-kV IEC 61000-4-2 contact and air-gap discharge, and ±4-kV IEC 61000-4-4 fast transient burst.
- What is the operating temperature range of the THVD2450DR?
The operating temperature range is from -40°C to 125°C.
- How many bus nodes can the THVD2450DR support?
The device can support up to 256 bus nodes.
- What types of packages are available for the THVD2450DR?
The device is available in SOIC, VSSOP, and VSON packages.
- Does the THVD2450DR have thermal shutdown protection?
Yes, the device features thermal shutdown protection.
- What is the common-mode range of the THVD2450DR?
The common-mode range is ±25 V.
- Is the THVD2450DR suitable for hot plug-in applications?
Yes, it features glitch-free power-up/down for hot plug-in capability.
- What are some typical applications of the THVD2450DR?
Typical applications include industrial automation, motor drives, HVAC systems, building automation, grid infrastructure, and automotive systems.
