Overview
The THVD1451DR from Texas Instruments is a 3.3-V to 5-V RS-485 transceiver designed for rugged industrial environments. This device is part of the THVD14xx family, which is known for its noise immunity and robustness against high levels of IEC electrical fast transients (EFT) and electrostatic discharge (ESD) events. It operates from a single supply voltage between 3 V and 5.5 V, making it versatile for various applications. The THVD1451DR is available in small VSON and SOIC packages, suitable for space-constrained designs, and is characterized over ambient free-air temperatures from –40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3 V to 5.5 V | V |
| Bus Voltage Range | -18 V to 18 V | V |
| Input Voltage Range | -0.3 V to 5.7 V | V |
| Signaling Rate | Up to 50 Mbps | |
| Operating Ambient Temperature | -40°C to 125°C | ℃ |
| Junction Temperature | -40°C to 150°C | ℃ |
| Package Types | VSON (8-pin), SOIC (8-pin) | |
| ESD Protection | ±18 kV IEC ESD |
Key Features
- Compliance with TIA/EIA-485A standard
- Differential output exceeds 2.1 V for PROFIBUS compatibility
- Extended common-mode voltage range for multi-point applications over long cable runs
- Robust against high levels of IEC EFT and ESD events
- Single supply voltage operation between 3 V and 5.5 V
- Small VSON and SOIC packages for space-constrained applications
- Operating temperature range from –40°C to 125°C
Applications
- Factory Automation & Control
- Grid Infrastructure
- Building Automation
- HVAC Systems
- Video Surveillance
- Process Analytics
- Wireless Infrastructure
Q & A
- What is the supply voltage range of the THVD1451DR?
The supply voltage range is from 3 V to 5.5 V. - What is the maximum signaling rate of the THVD1451DR?
The maximum signaling rate is up to 50 Mbps. - What kind of ESD protection does the THVD1451DR offer?
The device offers ±18 kV IEC ESD protection. - What are the available package types for the THVD1451DR?
The device is available in VSON (8-pin) and SOIC (8-pin) packages. - What is the operating temperature range of the THVD1451DR?
The operating temperature range is from –40°C to 125°C. - Is the THVD1451DR compatible with PROFIBUS?
Yes, the differential output exceeds 2.1 V for PROFIBUS compatibility. - What are some typical applications of the THVD1451DR?
Typical applications include factory automation, grid infrastructure, building automation, HVAC systems, video surveillance, process analytics, and wireless infrastructure. - Does the THVD1451DR require additional system-level protection components?
No, the device is robust against high levels of IEC EFT and ESD events, eliminating the need for additional protection components. - What is the common-mode voltage range of the THVD1451DR?
The device features an extended common-mode voltage range, making it suitable for multi-point applications over long cable runs. - How does the THVD1451DR handle noise in industrial environments?
The device is designed to be noise-immune, making it suitable for rugged industrial environments.
