THVD1406

ACTIVE

3.3-V to 5-V 500-Kbps half-duplex RS-485 transceiver auto-direction control ±12-kV IEC ESD

Product details

Number of receivers 1 Number of transmitters 1 Duplex Half Supply voltage (nom) (V) 3.3, 5 Signaling rate (max) (Mbps) 0.5 IEC 61000-4-2 contact (±V) 12000 Fault protection (V) -16 to 16 Common-mode range (V) -7 to 12 Number of nodes 256 Features Auto direction, IEC ESD 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) 0.5 IEC 61000-4-2 contact (±V) 12000 Fault protection (V) -16 to 16 Common-mode range (V) -7 to 12 Number of nodes 256 Features Auto direction, IEC ESD 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 SOT-5X3 (DRL) 8 3.36 mm² 2.1 x 1.6
  • Meets or exceeds the requirements of the TIA/EIA-485A standard
  • 3-V to 5.5-V Supply voltage
  • Auto-direction control using the data input pin
  • Half-duplex RS-422/RS-485
  • Data rates
    • THVD1406: 500 kbps
    • THVD1426: 12 Mbps
  • Bus I/O protection
    • ±16-kV HBM ESD
    • ±12-kV IEC 61000-4-2 Contact discharge
    • ±15-kV IEC 61000-4-2 Air gap discharge
    • ±4-kV IEC 61000-4-4 Fast transient burst
  • ±16-V bus fault protection
  • Small, space-saving 8-Pin SOT package option (2.1 mm x 1.2 mm)
    • See the layout example for co-layout with standard SOIC-8 package
  • Extended industrial temperature range: -40°C to 125°C
  • Large receiver hysteresis for noise rejection
  • Low power consumption
    • Low standby supply current: 3µA (typ)
    • Quiescent current during operation: 1.7 mA (typ)
  • Glitch-free power-up, power-down for hot plug-in capability
  • Open, short, and idle bus fail-safe
  • 1/8 Unit load (Up to 256 bus nodes)
  • Meets or exceeds the requirements of the TIA/EIA-485A standard
  • 3-V to 5.5-V Supply voltage
  • Auto-direction control using the data input pin
  • Half-duplex RS-422/RS-485
  • Data rates
    • THVD1406: 500 kbps
    • THVD1426: 12 Mbps
  • Bus I/O protection
    • ±16-kV HBM ESD
    • ±12-kV IEC 61000-4-2 Contact discharge
    • ±15-kV IEC 61000-4-2 Air gap discharge
    • ±4-kV IEC 61000-4-4 Fast transient burst
  • ±16-V bus fault protection
  • Small, space-saving 8-Pin SOT package option (2.1 mm x 1.2 mm)
    • See the layout example for co-layout with standard SOIC-8 package
  • Extended industrial temperature range: -40°C to 125°C
  • Large receiver hysteresis for noise rejection
  • Low power consumption
    • Low standby supply current: 3µA (typ)
    • Quiescent current during operation: 1.7 mA (typ)
  • Glitch-free power-up, power-down for hot plug-in capability
  • Open, short, and idle bus fail-safe
  • 1/8 Unit load (Up to 256 bus nodes)

The THVD14x6 (THVD1406 and THVD1426) devices are robust half-duplex RS-485 transceivers for industrial applications. These devices feature auto-direction control using the data input pin that reduces the reliance on separate pins for driver-enable and the receiver-enable functionality. This reduces the number of isolation channels needed or number of the GPIO pins needed for logic control. The bus pins are immune to high levels of IEC ESD events eliminating need of additional system level protection components.

The devices operate from a single 3-V to 5.5-V supply. The wide common-mode voltage range and low input leakage on bus pins make devices suitable for multi-point applications over long cable runs.

The devices are available in industry standard 8-pin SOIC package for drop-in compatibility. The devices are also available in a small, space-saving SOT package. The devices are characterized for ambient temperatures from –40°C to 125°C.

The THVD14x6 (THVD1406 and THVD1426) devices are robust half-duplex RS-485 transceivers for industrial applications. These devices feature auto-direction control using the data input pin that reduces the reliance on separate pins for driver-enable and the receiver-enable functionality. This reduces the number of isolation channels needed or number of the GPIO pins needed for logic control. The bus pins are immune to high levels of IEC ESD events eliminating need of additional system level protection components.

The devices operate from a single 3-V to 5.5-V supply. The wide common-mode voltage range and low input leakage on bus pins make devices suitable for multi-point applications over long cable runs.

The devices are available in industry standard 8-pin SOIC package for drop-in compatibility. The devices are also available in a small, space-saving SOT package. The devices are characterized for ambient temperatures from –40°C to 125°C.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
THVD1426 ACTIVE 3.3-V to 5-V 12-Mbps half-duplex RS-485 transceiver auto-direction control ±12-kV IEC ESD Supports maximum 12-Mbps data rate

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet THVD1406, THVD1426 3.3-V to 5-V RS-485 Transceivers with Auto-direction Control and ±12-kV IEC ESD Protection datasheet (Rev. A) PDF | HTML 16 Nov 2021
Application note RS-485: What is Auto-Direction and Why it is Useful in Systems? PDF | HTML 30 Mar 2022

Design & development

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

Evaluation board

RS485-HF-DPLX-EVM — RS-485 half-duplex evaluation module

The RS-485 half-duplex evaluation module (EVM) helps designers evaluate device performance, supporting fast development and analysis of data-transmission systems using any of the SN65HVD1x, SN65HVD2x, SN65HVD7x, SN65HVD8x and SN65HVD96 half-duplex transceivers. The EVM board comes without the (...)
User guide: PDF | HTML
Not available on TI.com
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
User guide: PDF
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
SOT-5X3 (DRL) 8 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos