Overview
The THVD1450DR, produced by Texas Instruments, is a 3.3-V to 5-V RS-485 transceiver designed for robust operation in industrial environments. This device is part of the THVD14xx family, which is known for its noise immunity and high tolerance to 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 THVD1450DR is available in compact VSSOP and VSON packages, suitable for space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 3 V to 5.5 V |
| Data Rate | Up to 50 Mbps |
| ESD Protection | ±18 kV IEC ESD |
| Package Types | VSSOP (8), VSON (8), SOIC (8) |
| Operating Temperature | -40°C to 125°C |
| Propagation Delay | 250 ns to 500 ns |
| Pulse Skew | 10 ns |
| Output Rise/Fall Time | 10 ns to 20 ns |
| Load Resistance (RS-485) | 54 Ω |
| Load Capacitance (RS-485) | 50 pF |
Key Features
- Compatibility 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
- High tolerance to IEC EFT and ESD events, eliminating the need for additional system-level protection components
- Compact VSSOP and VSON packages for space-constrained applications
- Operates over a wide ambient free-air temperature range from -40°C to 125°C
Applications
The THVD1450DR is suitable for a variety of industrial and commercial applications, including:
- Industrial automation and control systems
- Building automation and control systems
- Point-of-sale terminals and other commercial equipment
- Medical devices requiring robust communication interfaces
- Any application requiring reliable, high-speed RS-485 or RS-422 communication in harsh environments
Q & A
- What is the supply voltage range for the THVD1450DR?
The THVD1450DR operates from a single supply voltage between 3 V and 5.5 V. - What is the maximum data rate supported by the THVD1450DR?
The THVD1450DR supports data rates up to 50 Mbps. - What level of ESD protection does the THVD1450DR offer?
The THVD1450DR offers ±18 kV IEC ESD protection. - In what package types is the THVD1450DR available?
The THVD1450DR is available in VSSOP (8), VSON (8), and SOIC (8) packages. - What is the operating temperature range for the THVD1450DR?
The THVD1450DR operates over an ambient free-air temperature range from -40°C to 125°C. - What is the propagation delay of the THVD1450DR?
The propagation delay of the THVD1450DR is between 250 ns and 500 ns. - What is the pulse skew of the THVD1450DR?
The pulse skew of the THVD1450DR is 10 ns. - What are the output rise and fall times of the THVD1450DR?
The output rise and fall times of the THVD1450DR are between 10 ns and 20 ns. - What are the typical load resistance and capacitance for RS-485 applications?
The typical load resistance is 54 Ω, and the load capacitance is 50 pF for RS-485 applications. - Is the THVD1450DR compatible with PROFIBUS?
Yes, the THVD1450DR has a differential output that exceeds 2.1 V, making it compatible with PROFIBUS.
