• 3-V – 5.5-V supply voltage
• Half-duplex communication
  • Up to 500 kbps data rate with f₀ / bps = 10
  • Higher data rates are possible with f₀ / bps < 10
• RS-485 electrical signaling with on-off keying (OOK) modulation
• Pin selectable carrier frequency: 125 kHz – 5 MHz
• Spread spectrum clocking for excellent EMI performance
• Polarity free
• TX timeout to avoid stuck bus conditions
• Operational common-mode range: –7 V to 12 V
• Bus I/O protection
  • ± 18-V DC fault protection
  • ± 16 kV HBM ESD
  • ± 8 kV IEC 61000-4-2 contact discharge
  • ± 15 kV IEC 61000-4-2 air gap discharge
  • ± 4 kV IEC 61000-4-4 fast transient burst
• Extended temperature range: -40°C to 125°C
• 8-Pin SOT-23 package for space constrained applications

• HVAC systems
• Building automation
• Factory automation & control
• Appliances
• Lighting
• Grid infrastructure
• Power delivery

THVD8000 is an RS-485 transceiver with on-off keying (OOK) modulation and demodulation built in for power line communication. Modulating data onto existing power lines allows power delivery and data communication to share a common pair of wires, resulting in a significant reduction of the system cost.

A pin programmable interface simplifies the system design. The carrier frequency can be adjusted by changing an external resistor on the F_SET pin. A broad range of carrier frequencies gives the system designer the flexibility to choose the external inductors and capacitors. In addition, OOK modulation operates with immunity to data polarity for ease of system installations.