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.