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THVD1550

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5-V RS-485 transceiver with ±18-kV IEC ESD protection

Data sheet
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5-V RS-485 transceiver with ±18-kV IEC ESD protection

THVD1550

ACTIVE
Data sheet Order now

Product details

Parameters

Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (Nom) (V) 5 Signaling rate (Max) (Mbps) 50 IEC 61000-4-2 contact (+/- kV) 18 Fault protection (V) -18 to 18 Common mode range -15 to 15 Number of nodes 196 Features Extended common mode, IEC ESD protection Isolated No ICC (Max) (mA) 1 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other RS-485 & RS-422 transceivers

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other RS-485 & RS-422 transceivers

Features

  • Meets or Exceeds the Requirements of the TIA/EIA-485A Standard
  • 4.5 V to 5.5 V Supply Voltage
  • Integrated Bus I/O Protection
    • ± 30 kV HBM ESD
    • ± 18 kV IEC 61000-4-2 ESD Contact Discharge
    • ± 25 kV IEC 61000-4-2 ESD Air-Gap Discharge
    • ± 4 kV IEC 61000-4-4 Electrical Fast Transient
  • Extended Operational Common-mode: ± 15 V
  • Low EMI 500 kbps and 50 Mbps Data Rates
  • Extended Temperature Range: -40°C to 125°C
  • Large Receiver Hysteresis for Noise Rejection
  • Low Power Consumption
    • Low Standby Supply Current: < 1 µA
    • Current During Operation: < 1 mA
  • Glitch-Free Power-Up/Down for Hot Plug-in Capability
  • Open, Short, and Idle Bus Failsafe
  • 1/8 Unit Load Options (Up to 256 Bus Nodes)
  • Small-Size VSSOP Packages Save Board Space or SOIC for Drop-in Compatibility

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Description

THVD15xx is a family of noise-immune RS-485/RS-422 transceivers designed to operate in rugged industrial environments. The bus pins of these devices are robust to high levels of IEC electrical fast transients (EFT) and IEC electrostatic discharge (ESD) events, eliminating the need for additional system-level protection components.

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

THVD15xx family of devices is available in small VSSOP packages for space-constrained applications. 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 THVD15xx 5-V RS-485 Transceivers With ±18-kV IEC ESD Protection datasheet (Rev. C) Dec. 03, 2018
White paper RS-485 Basics Series Feb. 24, 2021
E-book Ein Techniker-Leitfaden für Industrieroboter-Designs Mar. 25, 2020
E-book E-book: An engineer’s guide to industrial robot designs Feb. 12, 2020
Technical article Frequently asked questions and answers for RS-485 transceivers Apr. 09, 2019
Technical article What is an EFT? Part 2 Jul. 17, 2018
Technical article How to calculate the power dissipation of high-speed RS-485 transceivers Jun. 14, 2018
Technical article What is an EFT? Oct. 30, 2017
Application note Signal Integrity vs. Transmission Rate and Cable Length for RS-485 Transceivers Aug. 29, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SIMULATION MODEL Download
SLLM388.ZIP (35 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
48V/500W Three-phase Inverter with Smart Gate Driver Reference Design for Servo Drives
TIDA-01629 — Efficiency, protection, and integration are important design factors for compact DC-fed drives up to 60VDC. This reference design shows a three-phase inverter with nominal 48-V DC input and a 10-ARMS output current.  The 100-V intelligent three-phase gate driver DRV8350R with integrated buck (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
IEC ESD, EFT, and Surge Protected RS-485 Reference Design
TIDA-00731 — The TIDA-00731 is a reference design examining how to protect an RS-485 bus against lethal transient waveforms such as IEC ESD, IEC EFT, and IEC surge. The reference design shows the level of protection that can be achieved through the implementation of an external protection scheme on the bus lines (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High EMC Immunity RS485 Interface Reference Design for Tamagawa Encoders
TIDA-01630 — EMC immunity, especially immunity against inverter switching noise, is important for positioning encoder feedback systems of industrial drives. This design demonstrates a high EMC immunity RS485 transceiver solution which can be used on both the drive and encoder, such as Tamagawa™, EnDat 2.2 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High EMC immunity RS-485 interface reference design for absolute encoders
TIDA-01401 — This high EMC immunity reference design demonstrates a RS-485 transceiver to use on both the drive and within encoders such as: EnDat 2.2, BiSS®, Tamagawa™, etc. EMC immunity, particularly immunity against inverter switching noise, is important for position encoder feedback systems within (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
RS-485 IEC ESD Reference Design
TIDA-00730 — The TIDA-00730 is an reference design examining how to protect an RS-485 bus against leathal transient waveforms such as IEC ESD, IEC EFT, and IEC surge. The reference design shows the level of protection that can be achieved through the implementation of a TVS diode on the bus lines of a standard (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

Ordering & quality

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  • Ongoing reliability monitoring

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