THVD8000T中文资料德州仪器数据手册PDF规格书

1 Features

• 3V to 5.5V supply voltage

• Half-duplex communication

– Up to 500kbps 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: 125kHz to 5MHz

• Spread spectrum clocking for excellent EMI

performance

• Polarity free

• TX timeout to avoid stuck bus conditions

• Operational common-mode range: –7V to 12V

• Bus I/O protection

– ± 18V DC fault protection

– ± 16kV HBM ESD

– ± 8kV IEC 61000-4-2 contact discharge

– ± 15kV IEC 61000-4-2 air gap discharge

– ± 4kV IEC 61000-4-4 fast transient burst

• Extended temperature range: −55°C to 125°C

• 8-Pin SOT-23 package for space constrained

applications

2 Applications

• HVAC systems

• Building automation

• Factory automation & control

• Appliances

• Lighting

• Grid infrastructure

• Power delivery

3 Description

THVD8000T 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 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. OOK modulation also operates

with immunity to data polarity for ease of system

installations.