Overview
The THVD1419DR, produced by Texas Instruments, is a 3.3-V to 5-V RS-485 transceiver that integrates surge protection, making it highly reliable in noisy industrial environments. This half-duplex transceiver is designed to meet or exceed the requirements of the TIA/EIA-485A standard. It operates over a wide ambient temperature range from -40°C to 125°C and features a robust set of protections including electrostatic discharge (ESD), electrical fast transient (EFT), and surge protection. The device is available in an industry-standard 8-pin SOIC package, ensuring easy drop-in compatibility without any PCB changes.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Supply Voltage | Operating voltage range | 3 V to 5.5 V | V |
| Data Rate | Maximum data rate for THVD1419 | 250 kbps | kbps |
| ESD Protection | HBM ESD protection | ±16 kV | kV |
| ESD Protection | IEC 61000-4-2 contact discharge | ±8 kV | kV |
| Surge Protection | IEC 61000-4-5 surge protection | ±2.5 kV | kV |
| Common-Mode Range | Extended operational common-mode range | ±12 V | V |
| Receiver Hysteresis | For noise rejection | 30 mV | mV |
| Standby Supply Current | When driver and receiver are disabled | < 2 µA | µA |
| Operational Supply Current | During operation | < 3 mA | mA |
| Package Type | Industry standard package | SOIC (8-pin) | |
| Body Size | Nominal body size | 4.90 mm × 3.91 mm | mm |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard.
- Operates from a single 3.3 V or 5 V supply.
- Bus I/O protection including ±16 kV HBM ESD, ±8 kV IEC 61000-4-2 contact discharge, and ±2.5 kV IEC 61000-4-5 surge protection.
- Extended ambient temperature range: -40°C to 125°C.
- Extended operational common-mode range: ±12 V.
- Receiver hysteresis for noise rejection: 30 mV.
- Low power consumption with standby supply current < 2 µA and operational supply current < 3 mA.
- Glitch-free power-up/down for hot plug-in capability.
- Open, short, and idle bus failsafe.
- 1/8 unit load (up to 256 bus nodes).
- Industry standard 8-pin SOIC package for drop-in compatibility.
Applications
- Wireless Infrastructure
- Building Automation
- HVAC Systems
- Factory Automation & Control
- Grid Infrastructure
- Smart Meters
- Process Analytics
- Video Surveillance
Q & A
- What is the operating voltage range of the THVD1419DR?
The THVD1419DR operates from a single 3.3 V to 5.5 V supply.
- What is the maximum data rate for the THVD1419DR?
The maximum data rate for the THVD1419DR is 250 kbps.
- What level of ESD protection does the THVD1419DR offer?
The THVD1419DR offers ±16 kV HBM ESD protection and ±8 kV IEC 61000-4-2 contact discharge protection.
- What is the extended operational common-mode range of the THVD1419DR?
The extended operational common-mode range is ±12 V.
- What is the receiver hysteresis for noise rejection in the THVD1419DR?
The receiver hysteresis for noise rejection is 30 mV.
- How much power does the THVD1419DR consume in standby mode?
The standby supply current is less than 2 µA when the driver and receiver are disabled.
- What is the package type and size of the THVD1419DR?
The THVD1419DR is available in an industry-standard 8-pin SOIC package with a nominal body size of 4.90 mm × 3.91 mm.
- What are some typical applications for the THVD1419DR?
Typical applications include wireless infrastructure, building automation, HVAC systems, factory automation, grid infrastructure, smart meters, process analytics, and video surveillance.
- Does the THVD1419DR support hot plug-in capability?
Yes, the THVD1419DR supports glitch-free power-up/down for hot plug-in capability.
- How many bus nodes can the THVD1419DR support?
The THVD1419DR can support up to 256 bus nodes as a 1/8 unit load.
