描述 Description

THVD24xxV-EP are ±70V fault-protected, half and full-duplex RS-422/RS-485 transceivers using a 1.65V to 5.5V logic supply for data and enable logic signals, and a 3V to 5.5V bus side supply. These devices have slew rate select feature that enables them to be used at two maximum speeds based on the SLR pin setting

These devices feature integrated IEC ESD protection, eliminating the need for external system-level protection components. The ±12V input common-mode range makes reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250-mV receiver hysteresis provides high noise rejection. In addition, the receiver fail-safe feature makes sure of a logic high when the inputs are open or shorted together.

THVD24xxV-EP half-duplex devices are available in small VSON package for space-constrained applications. The devices are available in standard 14-SOIC package.

特性 Features

Meets or exceeds the requirements of the TIA/EIA-485A and TIA/EIA-422B standards

Enhanced Product

Military temperature range (-55°C to 125°C)

One wafer fabrication site and one assembly and test site

Gold bond wire, NiPdAu lead finish

Wafer lot traceability

Extended product life cycle



3V to 5.5V supply voltage

Differential output exceeds 2.1V for PROFIBUS compatibility with 5V supply

1.65V to 5.5V Supply for data and enable signals

SLR Pin Selectable Data Rates:

THVD2410V-EP : 250kbps and 1Mbps

THVD2450V-EP, THVD2452V-EP: 20Mbps and 50Mbps



Bus I/O protection

±70V DC bus fault

±16kV HBM ESD

±12kV IEC 61000-4-2 contact discharge

±12kV IEC 61000-4-2 air-gap discharge

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



Half-duplex and full-duplex devices available in two speed grades

Symmetric common mode voltage range: ±12V

Enhanced receiver hysteresis for noise immunity

Low power consumption

Low shutdown supply current: < 1μA

Current during operation: < 5.6mA



Glitch-free power-up/down for hot plug-in capability

Open, short, and idle bus failsafe

Thermal shutdown

1/8 unit load (up to 256 bus nodes)

Small mm x 3mm VSON package (half-duplex) to save board space, or 14-D (full-duplex) for drop-in compatibility