Overview
The THVD1500DR is a robust half-duplex RS-485 transceiver designed for industrial applications. Produced by Texas Instruments, this device operates from a single 5-V supply and is characterized by its wide common-mode voltage range and low input leakage on bus pins, making it suitable for multi-point applications over long cable runs. The THVD1500DR is available in an industry-standard 8-pin SOIC package, ensuring drop-in compatibility. It is designed to operate over an extended industrial temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Data Transfer Rate | Up to 500 | kbps |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | SOIC (8-pin) | |
| ESD Protection | ±8 kV (Contact Discharge), ±10 kV (Air Gap Discharge), ±2 kV (Fast Transient Burst) | |
| Receiver Hysteresis | 50 mV | |
| Standby Supply Current | < 1 µA | |
| Quiescent Current During Operation | < 660 µA |
Key Features
- Meets or exceeds the requirements of the TIA/EIA-485A Standard and the State Grid Corporation of China (SGCC) Part 11 Serial Communication Protocol RS-485 Standard.
- Half-Duplex RS-422/RS-485 operation.
- Bus I/O protection against high levels of IEC Contact Discharge ESD events.
- Low power consumption with low standby supply current and quiescent current during operation.
- Glitch-free power-up/down for hot plug-in capability.
- Open, short, and idle bus failsafe.
- 1/8 unit load options, supporting up to 256 bus nodes.
- Low EMI at 500 kbps.
Applications
The THVD1500DR is suitable for various industrial applications, including:
- Multi-point data transmission over long cable runs.
- Industrial automation and control systems.
- Building automation and control systems.
- Remote sensors and actuators.
- Other applications requiring robust and reliable serial communication.
Q & A
- What is the operating temperature range of the THVD1500DR?
The operating temperature range is -40°C to 125°C.
- What is the data transfer rate of the THVD1500DR?
The data transfer rate is up to 500 kbps.
- What type of ESD protection does the THVD1500DR offer?
The device offers ±8 kV (Contact Discharge), ±10 kV (Air Gap Discharge), and ±2 kV (Fast Transient Burst) ESD protection.
- What is the supply voltage range for the THVD1500DR?
The supply voltage range is 4.5 V to 5.5 V.
- Is the THVD1500DR suitable for multi-point applications?
Yes, it is suitable for multi-point applications over long cable runs due to its wide common-mode voltage range and low input leakage on bus pins.
- What is the package type of the THVD1500DR?
The device is available in an 8-pin SOIC package.
- Does the THVD1500DR have built-in failsafe mechanisms?
Yes, it has open, short, and idle bus failsafe mechanisms.
- How many bus nodes can the THVD1500DR support?
It can support up to 256 bus nodes with 1/8 unit load options.
- Is the THVD1500DR designed for low power consumption?
Yes, it has low power consumption with a standby supply current of less than 1 µA and quiescent current during operation of less than 660 µA.
- Does the THVD1500DR have glitch-free power-up/down capability?
Yes, it has glitch-free power-up/down for hot plug-in capability.
