Overview
The THVD1439VDR is a half-duplex RS-485 transceiver produced by Texas Instruments. It is part of the THVD14x9 family, which includes devices with integrated surge protection, making them highly reliable in noisy environments. The THVD1439VDR operates at a data rate of up to 250 kbps and supports a wide range of supply voltages from 3-V to 5.5-V. Additionally, it features VIO support from 1.65-V to VCC supply level, enhancing its versatility in various applications. The device is packaged in an 8-pin SOIC and is designed for drop-in compatibility with industry-standard RS-485 transceivers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3-V to 5.5-V | V |
| Logic Supply Voltage (VIO) | 1.65-V to VCC | V |
| Data Rate | 250 kbps | kbps |
| Operating Ambient Temperature | -40°C to 125°C | °C |
| Common-Mode Voltage Range | ±12 V | V |
| Bus Voltage Range | -15 V to 15 V | V |
| Surge Protection | ±4 kV IEC 61000-4-5, ±15 kV IEC 61000-4-2 | kV |
| Package Type | 8-pin SOIC | - |
| Receiver Hysteresis | 250 mV | mV |
| Standby Supply Current | < 3 µA | µA |
| Operational Supply Current | < 5 mA | mA |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard.
- Integrated surge protection: ±4 kV IEC 61000-4-5, ±15 kV IEC 61000-4-2, and ±15 kV HBM ESD.
- Wide common-mode voltage range: ±12 V.
- Large receiver hysteresis for noise rejection: 250 mV.
- Low power consumption: Standby supply current < 3 µA, operational supply current < 5 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.
- Factory automation.
- Motor drives.
- Building automation.
- HVAC (Heating, Ventilation, and Air Conditioning).
- Grid infrastructure.
Q & A
- What is the data rate of the THVD1439VDR?
The THVD1439VDR operates at a data rate of up to 250 kbps.
- What is the supply voltage range for the THVD1439VDR?
The supply voltage range is from 3-V to 5.5-V.
- Does the THVD1439VDR support VIO supply?
- What kind of surge protection does the THVD1439VDR offer?
The device offers ±4 kV IEC 61000-4-5, ±15 kV IEC 61000-4-2, and ±15 kV HBM ESD surge protection.
- What is the operating ambient temperature range for the THVD1439VDR?
The operating ambient temperature range is -40°C to 125°C.
- What is the common-mode voltage range of the THVD1439VDR?
The common-mode voltage range is ±12 V.
- What is the package type of the THVD1439VDR?
The device is packaged in an 8-pin SOIC.
- Does the THVD1439VDR have built-in failsafe mechanisms?
- What is the standby supply current of the THVD1439VDR?
The standby supply current is less than 3 µA.
- What are some typical applications of the THVD1439VDR?
Typical applications include wireless infrastructure, factory automation, motor drives, building automation, HVAC, and grid infrastructure.
