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1 Features

1? 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

? 4.5 V to 5.5 V Supply Voltage

? Half-Duplex RS-422/RS-485

? Bus I/O Protection

– ± 16 kV HBM ESD

– ± 8 kV IEC 61000-4-2 Contact Discharge

– ± 10 kV IEC 61000-4-2 Air Gap Discharge

– ± 2 kV IEC 61000-4-4 Fast Transient Burst

? Extended Industrial Temperature Range: -40°C to

125°C

? Large Receiver Hysteresis for Noise Rejection

? Low Power Consumption

– Low Standby Supply Current: < 1 μA

– Quiescent During Operation: < 660 μA

? Glitch-Free Power-Up/Down for Hot Plug-in

Capability

? Open, Short, and Idle Bus Failsafe

? 1/8 Unit Load Options (Up to 256 Bus Nodes)

? Low EMI 500 kbps

2 Applications

? Electricity Meters (E-Meters)

? Inverters

? HVAC Systems

? Video Surveillance Systems

3 Description

THVD1500 is a robust half-duplex RS-485 transceiver

for industrial applications. The bus pins are immune

to high levels of IEC Contact Discharge ESD events

eliminating need of additional system level protection

components.

The device operates from a single 5-V supply. The

wide common-mode voltage range and low input

leakage on bus pins make THVD1500 suitable for

multi-point applications over long cable runs.

THVD1500 is available in industry standard 8-pin

SOIC package for drop-in compatibility. The device is

characterized from –40°C to 125°C.