1 Features

. Meets or exceeds the requirements of

the TIA/EIA-485A and TIA/EIA-422B standards

. Functional Safety-Capable

. Documentation available to aid functional safety

system design

. 3-V to 5.5-V supply voltage

. Differential output exceeds 2.1 V for PROFIBUS

compatibility with 5-V supply

. Bus I/O protection

. ±70-V DC bus fault

. ±16-kV HBM ESD

. ±12-kV IEC 61000-4-2 contact discharge

. ±12-kV IEC 61000-4-2 air-gap discharge

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

. Half-duplex devices

available in two speed grades

. THVD2410: 500 kbps

. THVD2450: 50 Mbps

. Extended ambient

temperature range: -40°C to 125°C

. Extended operational

common-mode range: ±25 V

. Enhanced receiver hysteresis

for noise immunity

. Low power consumption

. Low shutdown supply current: < 1 μA

. Current during operation: < 5.6 mA

. 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 VSON and VSSOP packages to save board

space or SOIC for drop-in compatibility

2 Applications

. Motor drives

. Factory automation and control

. HVAC systems

. Building automation

. Grid infrastructure

. Electricity meters

. Process analytics

. Video surveillance

3 Description

THVD2410 and THVD2450 are ±70-V fault-protected,

half-duplex, RS-422/RS-485 transceivers operating on

a single 3-V to 5.5-V supply. Bus interface pins are

protected against overvoltage conditions during all

modes of operation ensuring robust communication in

rugged industrial environments.

These devices feature integrated IEC ESD protection,

eliminating the need for external system-level

protection components. Extended ±25-V input

common-mode range guarantees 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. In addition, the receiver fail-safe

feature guarantees a logic high when the inputs are

open or shorted together.

THVD24x0 devices are available in small VSSOP and

VSON packages for space-constrained applications.

These devices are characterized over ambient free-air

temperatures from –40°C to 125°C.