THVD1429

• Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
• 3 V to 5.5 V Supply Voltage
• Bus I/O Protection
  • ± 16 kV HBM ESD
  • ± 8 kV IEC 61000-4-2 Contact Discharge
  • ± 30 kV IEC 61000-4-2 Air-Gap Discharge
  • ± 4 kV IEC 61000-4-4 Electrical Fast Transient
  • ± 2.5 kV IEC 61000-4-5 1.2/50-µs Surge
• Available in Two Speed Grades
  • THVD1419: 250 kbps
  • THVD1429: 20 Mbps
• Extended Ambient
  Temperature Range: -40°C to 125°C
• Extended Operational
  Common-Mode Range: ± 12 V
• Receiver Hysteresis for Noise Rejection: 30 mV
• Low Power Consumption
  • Standby Supply Current: < 2 µA
  • Current During Operation: < 3 mA
• Glitch-Free Power-Up/Down for Hot Plug-in Capability
• Open, Short, and Idle Bus Failsafe
• 1/8 Unit Load (Up to 256 Bus Nodes)
• Industry Standard 8-Pin SOIC
  for Drop-in Compatibility

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THVD1419 and THVD1429 are half-duplex RS-485 transceivers with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable, eliminating the need for external protection components.

Each of these devices operates from a single 3.3 V or 5 V supply. The devices in this family feature a wide common-mode voltage range which makes them suitable for multi-point applications over long cable runs.

The THVD1419 and THVD1429 devices are available in the industry standard SOIC package for easy drop-in without any PCB changes. These devices are characterized over ambient free-air temperatures from –40°C to 125°C.