1 Features

1• Meets or Exceeds the Requirements of the

TIA/EIA-485A Standard

• 4.5 V to 5.5 V Supply Voltage

• Integrated Bus I/O Protection

– ± 30 kV HBM ESD

– ± 18 kV IEC 61000-4-2 ESD Contact

Discharge

– ± 25 kV IEC 61000-4-2 ESD Air-Gap

Discharge

– ± 4 kV IEC 61000-4-4 Electrical Fast Transient

• Extended Operational Common-mode: ± 15 V

• Low EMI 500 kbps and 50 Mbps Data Rates

• Extended Temperature Range: -40°C to 125°C

• Large Receiver Hysteresis for Noise Rejection

• Low Power Consumption

– Low Standby Supply Current: < 1 μA

– Current During Operation: < 1 mA

• 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)

• Small-Size VSSOP Packages Save Board Space

or SOIC for Drop-in Compatibility

2 Applications

• Motor Drives

• Factory Automation and Control

• Grid Infrastructure

• Building Automation

• HVAC Systems

• Video Surveillance

• Process Analytics

• Telecom Infrastructure

3 Description

THVD15xx is a family of noise-immune RS-485/RS-

422 transceivers designed to operate in rugged

industrial environments. The bus pins of these

devices are robust to high levels of IEC electrical fast

transients (EFT) and IEC electrostatic discharge

(ESD) events, eliminating the need for additional

system-level protection components.

Each of these devices operates from a single 5-V

supply. The devices in this family feature an extended

common-mode voltage range which makes them

suitable for multi-point applications over long cable

runs.

THVD15xx family of devices is available in small

VSSOP packages for space-constrained applications.

These devices are characterized over ambient freeair

temperatures from –40°C to 125°C.