Overview
The THVD1450DRBR, produced by Texas Instruments, is a member of the THVD14xx family of RS-485/RS-422 transceivers. These devices are designed to operate in rugged industrial environments and are characterized by their robustness against high levels of IEC electrical fast transients (EFT) and electrostatic discharge (ESD) events. The THVD1450DRBR operates from a single supply voltage between 3 V and 5.5 V, making it versatile for various applications. It features an extended common-mode voltage range, which is particularly useful for multi-point applications over long cable runs. The device is available in compact VSON and VSSOP packages, suitable for space-constrained applications, and is operational over a wide temperature range from –40°C to 125°C.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage | 3 V to 5.5 V | |
| ESD Protection | ±18-kV IEC | |
| Operating Temperature | –40°C to 125°C | |
| Differential Output | ≥ 2.1 V for PROFIBUS compatibility | |
| Propagation Delay | 250 ns to 500 ns | CL = 50 pF |
| Pulse Skew | 10 ns | |tPHL – tPLH| |
| Disable Time | 80 ns to 200 ns | RE = 0 V |
| Enable Time | 100 ns to 600 ns | RE = VCC |
| Output Rise/Fall Time | 10 ns to 20 ns | CL = 15 pF |
| Package Options | VSON (8), VSSOP (8), SOIC (8) |
Key Features
- Robust ESD protection with ±18-kV IEC compliance, eliminating the need for additional system-level protection components.
- Extended common-mode voltage range, making it suitable for multi-point applications over long cable runs.
- Compact packaging options (VSON, VSSOP, SOIC) for space-constrained applications.
- Wide operating temperature range from –40°C to 125°C.
- Compatibility with 3.3 V to 5 V supply voltage, ensuring versatility in different system designs.
- Differential output exceeds 2.1 V for PROFIBUS compatibility.
Applications
- Industrial automation and control systems.
- Long-distance communication over RS-485/RS-422 networks.
- Multi-point applications requiring robust ESD protection.
- Space-constrained designs where compact packaging is essential.
- Systems requiring high reliability and noise immunity in harsh environments.
Q & A
- What is the supply voltage range for the THVD1450DRBR?
The supply voltage range is from 3 V to 5.5 V.
- What level of ESD protection does the THVD1450DRBR offer?
The device offers ±18-kV IEC ESD protection.
- What are the available package options for the THVD1450DRBR?
The device is available in VSON (8), VSSOP (8), and SOIC (8) packages.
- What is the operating temperature range of the THVD1450DRBR?
The operating temperature range is from –40°C to 125°C.
- Is the THVD1450DRBR compatible with PROFIBUS?
- What is the typical propagation delay of the THVD1450DRBR?
The propagation delay is typically between 250 ns and 500 ns.
- What is the pulse skew of the THVD1450DRBR?
The pulse skew is typically 10 ns.
- How does the THVD1450DRBR handle high levels of EFT and ESD?
The device is robust against high levels of IEC electrical fast transients (EFT) and electrostatic discharge (ESD) events, eliminating the need for additional system-level protection components.
- What are some common applications for the THVD1450DRBR?
- What is the output rise/fall time of the THVD1450DRBR?
The output rise/fall time is typically between 10 ns and 20 ns for a load capacitance of 15 pF.
