Overview
The THVD8010DDFR from Texas Instruments is an RS-485 transceiver designed for power line communication, incorporating on-off keying (OOK) modulation and demodulation. This device allows data to be modulated onto existing power lines, enabling both power delivery and data communication over a common pair of wires, thereby reducing system costs. The THVD8010DDFR features a pin-programmable interface, adjustable carrier frequency, and immunity to data polarity, making it versatile and easy to integrate into various systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23-THN (DDF) | |
| Pins | 8 | |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage | 3-V to 5.5-V | V |
| Data Rate (OOK) | Up to 30 Kbps | |
| Carrier Frequency Range | 125 kHz to 300 kHz | |
| Common-Mode Range | -7 V to 12 V | V |
| ESD Protection | ± 16 kV HBM, ± 8 kV IEC 61000-4-2 contact discharge | |
| Bus I/O Protection | ± 18-V DC fault protection |
Key Features
- Half-duplex communication with RS-485 electrical signaling and OOK modulation
- Pin selectable carrier frequency: 125 kHz – 300 kHz
- Spread spectrum clocking for excellent EMI performance
- TX timeout to avoid stuck bus conditions
- Polarity-free operation for ease of system installations
- Good noise immunity and bus I/O protection
- Integrated IEC ESD and EFT protection
- Glitch-free mode change between transmit and receive modes
- 8-Pin SOT-23 package suitable for space-constrained applications
Applications
- HVAC systems
- Building automation
- Factory automation and control
- Appliances
- Lighting systems
- Grid infrastructure
Q & A
- What is the primary function of the THVD8010DDFR?
The THVD8010DDFR is an RS-485 transceiver with OOK modulation and demodulation for power line communication.
- What is the operating temperature range of the THVD8010DDFR?
The operating temperature range is -40°C to 125°C.
- What is the supply voltage range for the THVD8010DDFR?
The supply voltage range is 3-V to 5.5-V.
- What is the maximum data rate supported by the THVD8010DDFR in OOK mode?
The maximum data rate is up to 30 Kbps.
- How is the carrier frequency selected in the THVD8010DDFR?
The carrier frequency is selected by changing an external resistor connected to the F_SET pin.
- What kind of ESD protection does the THVD8010DDFR offer?
The device offers ± 16 kV HBM ESD protection and ± 8 kV IEC 61000-4-2 contact discharge protection.
- Does the THVD8010DDFR support polarity-free operation?
Yes, the device operates with immunity to data polarity at the receiver input in OOK mode.
- What is the purpose of the TX timeout feature in the THVD8010DDFR?
The TX timeout feature prevents a faulty node from occupying the bus indefinitely by stopping transmission if no edge is detected at the D input for a specified period.
- What type of package does the THVD8010DDFR come in?
The device comes in an 8-pin SOT-23-THN (DDF) package.
- What are some common applications of the THVD8010DDFR?
Common applications include HVAC systems, building automation, factory automation, appliances, lighting systems, and grid infrastructure.
