The THVD2450 is a ±70 V fault protected half-duplex RS-485 transceiver that operates from a single 3 V to 5.5 V supply. The bus interface pins are overvoltage protected during active mode to ensure stable communication in harsh industrial environments.

The transceiver device features integrated IEC ESD protection and eliminates the need for external system-level protection components. The extended ±25 V input common-mode range provides reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250 mV receiver hysteresis ensures high noise rejection. The fail-safe feature of the receiver provides a logic high when the inputs are open or shorted together.

The THVD2450 device is available in small VSSOP and VSON packages, making it ideal for space-constrained applications. These devices are rated for a natural ventilation ambient temperature of -40°C to +125°C.

characteristic

Meets or exceeds the requirements of the TIA/EIA-485A standard

Supply voltage: 3 V to 5.5 V

Differential output over 2.1 V, PROFIBUS compatible with 5 V supply

Bus I/O Protection:

DC bus fault: ±70 VDC

HBM ESD: ±16kV

IEC 61000-4-2 Contact discharge ±12 kV

IEC 61000-4-2 Air Gap Discharge ±12 kV

IEC 61000-4-4 fast transient pulse: ±4 kV

Half-duplex device with a speed rating of 50 Mbps

Extended ambient temperature range: -40°C to +125°C

Extended operating common mode range: ±25 V

Enhanced receiver hysteresis, noise immunity

Low power consumption

Glitch-free power on/off for hot-swap capability

Open, Short and Idle Bus Failsafe Features

thermal shutdown

1/8 unit load (max. 256 bus nodes)

Packaging: Small VSON and VSSOP save board space, while SOIC enables direct compatibility

application

motor driven

Factory Automation and Control

HVAC system

building automation

grid infrastructure

Electricity meter

Process analysis

Video Surveillance

Seismic Test Equipment

RS485-HF-DPLX-EVM