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THVD1429

ACTIVE

3.3-V to 5-V RS-485 transceiver with surge protection

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Data sheet

THVD1429

ACTIVE
Data sheet Order now

Product details

Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (nom) (V) 3.3, 5 Signaling rate (max) (Mbps) 20 IEC 61000-4-2 contact (±V) 8000 Fault protection (V) -15 to 15 Common-mode range (V) -12 to 12 Number of nodes 256 Features Extended common mode, IEC ESD protection, Surge protection Isolated No Supply current (max) (µA) 3000 Rating Catalog Operating temperature range (°C) -40 to 125
Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (nom) (V) 3.3, 5 Signaling rate (max) (Mbps) 20 IEC 61000-4-2 contact (±V) 8000 Fault protection (V) -15 to 15 Common-mode range (V) -12 to 12 Number of nodes 256 Features Extended common mode, IEC ESD protection, Surge protection Isolated No Supply current (max) (µA) 3000 Rating Catalog Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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
  • 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

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.

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.
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Technical documentation

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Type Title Date
* Data sheet THVD14x9 3.3-V to 5-V RS-485 transceivers with surge protection datasheet (Rev. C) PDF | HTML 19 Mar 2019
Application note Simplifying Surge Protection for RS-485 Using Integrated Designs PDF | HTML 20 May 2024
EVM User's guide RS-485 Half-Duplex EVM User's Guide (Rev. C) PDF | HTML 01 Sep 2021
Technical article Frequently asked questions and answers for RS-485 transceivers PDF | HTML 09 Apr 2019
Technical article Can your RS-485 communication survive the great outdoors? PDF | HTML 29 Mar 2019
Application note Signal Integrity versus Data Rate and Cable Length for RS-485 Transceivers 05 Dec 2018

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