Home Interface RS-485 & RS-422 transceivers
Home
Interface
RS-485 & RS-422 transceivers
NEW

THVD9491-SEP

PREVIEW

Radiation-tolerant 3V to 5.5V RS-485 transceiver with flexible I/O supply and IEC ESD

Order now
Data sheet

THVD9491-SEP

PREVIEW
Data sheet Order now

Product details

Number of receivers 1 Number of transmitters 1 Duplex Full Supply voltage (nom) (V) 3.3, 5 Signaling rate (max) (Mbps) 50 IEC 61000-4-2 contact (±V) 8000 Fault protection (V) -70 to 70 Common-mode range (V) -12 to 12 Number of nodes 256 Features 1.65-V I/O supply, Fault protection, IEC ESD protection, PROFIBUS Isolated No Supply current (max) (µA) 72000 Rating Space Operating temperature range (°C) -40 to 125
Number of receivers 1 Number of transmitters 1 Duplex Full Supply voltage (nom) (V) 3.3, 5 Signaling rate (max) (Mbps) 50 IEC 61000-4-2 contact (±V) 8000 Fault protection (V) -70 to 70 Common-mode range (V) -12 to 12 Number of nodes 256 Features 1.65-V I/O supply, Fault protection, IEC ESD protection, PROFIBUS Isolated No Supply current (max) (µA) 72000 Rating Space Operating temperature range (°C) -40 to 125
SOIC (D) 14 51.9 mm² 8.65 x 6
  • Meets or exceeds the requirements of the TIA/EIA-485A and TIA/EIA-422B standards
  • Total ionizing dose (TID) characterized up to 30krad (Si)
    • Total ionizing dose radiation lot acceptance testing (TID RLAT) for every wafer lot to 30krad (Si)
  • Single-event effects (SEE) characterized
    • Single event latch-up (SEL) immune to linear energy transfer (LET) = 43MeV⋅cm2 /mg at 125°C
  • Space enhanced plastic (Space EP)
    • Controlled baseline
    • One assembly and test site
    • One fabrication site
    • Gold bond wire
    • NiPdAu lead finish
    • Military temp range (-55°C to 125°C)
    • Extended product life cycle
    • Product traceability
    • Meets the NASA ASTM E595 outgassing specification
  • 3V to 5.5V supply voltage
  • 1.65V to 5.5V Supply for data and enable signals
  • SLR Pin Selectable Data Rates:
    • 20Mbps and 50Mbps
  • Bus I/O protection
    • ±70V DC bus fault
    • ±16kV HBM ESD
    • ±8kV IEC 61000-4-2 contact discharge
    • ±4kV IEC 61000-4-4 fast transient burst
  • Symmetric common mode range: ±12V
  • Enhanced receiver hysteresis for noise immunity
  • Glitch-free power-up or down for hot plug-in capability
  • Open, short, and idle bus failsafe
  • 1/8 unit load (up to 256 bus nodes)
  • Leaded 14-pin SOIC package
  • Meets or exceeds the requirements of the TIA/EIA-485A and TIA/EIA-422B standards
  • Total ionizing dose (TID) characterized up to 30krad (Si)
    • Total ionizing dose radiation lot acceptance testing (TID RLAT) for every wafer lot to 30krad (Si)
  • Single-event effects (SEE) characterized
    • Single event latch-up (SEL) immune to linear energy transfer (LET) = 43MeV⋅cm2 /mg at 125°C
  • Space enhanced plastic (Space EP)
    • Controlled baseline
    • One assembly and test site
    • One fabrication site
    • Gold bond wire
    • NiPdAu lead finish
    • Military temp range (-55°C to 125°C)
    • Extended product life cycle
    • Product traceability
    • Meets the NASA ASTM E595 outgassing specification
  • 3V to 5.5V supply voltage
  • 1.65V to 5.5V Supply for data and enable signals
  • SLR Pin Selectable Data Rates:
    • 20Mbps and 50Mbps
  • Bus I/O protection
    • ±70V DC bus fault
    • ±16kV HBM ESD
    • ±8kV IEC 61000-4-2 contact discharge
    • ±4kV IEC 61000-4-4 fast transient burst
  • Symmetric common mode range: ±12V
  • Enhanced receiver hysteresis for noise immunity
  • Glitch-free power-up or down for hot plug-in capability
  • Open, short, and idle bus failsafe
  • 1/8 unit load (up to 256 bus nodes)
  • Leaded 14-pin SOIC package

THVD9491-SEP is a space enhanced, ±70V fault-protected full-duplex RS-422/RS-485 transceiver using a 1.65V to 5.5V logic supply for data and enable logic signals, and a 3V to 5.5V bus side supply. The device has a slew rate select feature that enables the use at two maximum speeds based on the SLR pin setting.

The device features integrated IEC ESD protection, eliminating the need for external system-level protection components. The ±12V input common-mode range makes reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250mV receiver hysteresis provides high noise rejection. In addition, the receiver fail-safe feature makes sure of a logic high when the inputs are open or shorted together.

THVD9491-SEP device is available in a standard 14-pin SOIC package.

THVD9491-SEP is a space enhanced, ±70V fault-protected full-duplex RS-422/RS-485 transceiver using a 1.65V to 5.5V logic supply for data and enable logic signals, and a 3V to 5.5V bus side supply. The device has a slew rate select feature that enables the use at two maximum speeds based on the SLR pin setting.

The device features integrated IEC ESD protection, eliminating the need for external system-level protection components. The ±12V input common-mode range makes reliable data communication over longer cable run lengths and/or in the presence of large ground loop voltages. Enhanced 250mV receiver hysteresis provides high noise rejection. In addition, the receiver fail-safe feature makes sure of a logic high when the inputs are open or shorted together.

THVD9491-SEP device is available in a standard 14-pin SOIC package.
filter Find other RS-485 & RS-422 transceivers
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet THVD9491-SEP Radiation Tolerant 3V to 5.5V RS-485 Transceiver with Flexible I/O Supply and IEC ESD Protection datasheet PDF | HTML 09 Jan 2024

Design & development

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

Evaluation board

THVD24X2VEVM — THVD24X2V family of parts Evaluation Module (EVM)

The THVD24X2VEVM, which provides a quick way to evaluate TI’s THVD24X2V family of parts, is a full duplex RS-485 transceiver with selectable data rate in a 14-SOIC (D) package.
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 (...)
Request
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
View Options
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 14 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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

View all forum topics

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