THVD2450

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

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.