Home Isolation Digital isolators
Home
Isolation
Digital isolators

ISO7331C

ACTIVE

Low-power, triple-channel, 2/1, 25-Mbps digital isolator

Order now
Data sheet

A newer version of this product is available

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
ISO6731 ACTIVE General-purpose, triple-channel, 2/1, digital isolator Supports 50-Mbps data rate
ISO7731 ACTIVE Robust EMC, triple-channel, 2/1, reinforced digital isolator Supports 100-Mbps data rate

ISO7331C

ACTIVE
Data sheet Order now

Product details

Rating Catalog Integrated isolated power No Isolation rating Basic Number of channels 3 Forward/reverse channels 2 forward / 1 reverse Default output High Data rate (max) (Mbps) 25 Surge isolation voltage (VIOSM) (VPK) 7800 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 3000 CMTI (min) (V/µs) 25000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 Propagation delay time (typ) (µs) 0.031 Current consumption per channel (DC) (typ) (mA) 1 Current consumption per channel (1 Mbps) (typ) (mA) 1 Creepage (min) (mm) 8 Clearance (min) (mm) 8
Rating Catalog Integrated isolated power No Isolation rating Basic Number of channels 3 Forward/reverse channels 2 forward / 1 reverse Default output High Data rate (max) (Mbps) 25 Surge isolation voltage (VIOSM) (VPK) 7800 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 3000 CMTI (min) (V/µs) 25000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 Propagation delay time (typ) (µs) 0.031 Current consumption per channel (DC) (typ) (mA) 1 Current consumption per channel (1 Mbps) (typ) (mA) 1 Creepage (min) (mm) 8 Clearance (min) (mm) 8
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Signaling Rate: 25 Mbps
  • Integrated Noise Filter on the Inputs
  • Default Output ‘High’ and ‘Low’ Options
  • Low Power Consumption: Typical ICC per Channel
    at 1 Mbps:
    • ISO7330: 1 mA (5 V Supplies),
      0.8 mA (3.3 V Supplies)
    • ISO7331: 1.4 mA (5 V Supplies),
      1 mA (3.3 V Supplies)
  • Low Propagation Delay: 32 ns
    Typical (5V Supplies)
  • Operates from 3.3 V and 5 V Supplies
  • 3.3 V and 5 V Level Translation
  • Wide Temperature Range: –40°C to 125°C
  • 70 KV/µs Transient Immunity,
    Typical (5V Supplies)
  • Robust Electromagnetic Compatibility (EMC)
    • System-level ESD, EFT, and Surge Immunity
    • Low Emissions
  • Wide Body SOIC-16 Package
  • Isolation Barrier Life: > 25 Years
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10
      and DIN EN 61010-1
    • 3000 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC
      60950-1 and IEC 61010-1 End Equipment
      Standards
    • CQC Certification per GB4943.1-2011
  • Signaling Rate: 25 Mbps
  • Integrated Noise Filter on the Inputs
  • Default Output ‘High’ and ‘Low’ Options
  • Low Power Consumption: Typical ICC per Channel
    at 1 Mbps:
    • ISO7330: 1 mA (5 V Supplies),
      0.8 mA (3.3 V Supplies)
    • ISO7331: 1.4 mA (5 V Supplies),
      1 mA (3.3 V Supplies)
  • Low Propagation Delay: 32 ns
    Typical (5V Supplies)
  • Operates from 3.3 V and 5 V Supplies
  • 3.3 V and 5 V Level Translation
  • Wide Temperature Range: –40°C to 125°C
  • 70 KV/µs Transient Immunity,
    Typical (5V Supplies)
  • Robust Electromagnetic Compatibility (EMC)
    • System-level ESD, EFT, and Surge Immunity
    • Low Emissions
  • Wide Body SOIC-16 Package
  • Isolation Barrier Life: > 25 Years
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10
      and DIN EN 61010-1
    • 3000 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC
      60950-1 and IEC 61010-1 End Equipment
      Standards
    • CQC Certification per GB4943.1-2011

ISO733x provide galvanic isolation up to 3000 VRMS for 1 minute per UL and 4242 VPK per VDE. These devices have three isolated channels comprised of logic input and output buffers separated by a silicon dioxide (SiO2) insulation barrier. ISO7330 has all three channels in the same direction while ISO7331 has two channels in forward and one channel in reverse direction. In case of input power or signal loss, default output is ‘low’ for devices with suffix ‘F’ and ‘high’ for devices without suffix ‘F’. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. ISO733x has integrated noise filter for harsh industrial environment where short noise pulses may be present at the device input pins. ISO733x has TTL input thresholds and operates from 3 V to 5.5 V supply levels. Through innovative chip design and layout techniques, electromagnetic compatibility of ISO733x has been significantly enhanced to enable system-level ESD, EFT, Surge and Emissions compliance.

ISO733x provide galvanic isolation up to 3000 VRMS for 1 minute per UL and 4242 VPK per VDE. These devices have three isolated channels comprised of logic input and output buffers separated by a silicon dioxide (SiO2) insulation barrier. ISO7330 has all three channels in the same direction while ISO7331 has two channels in forward and one channel in reverse direction. In case of input power or signal loss, default output is ‘low’ for devices with suffix ‘F’ and ‘high’ for devices without suffix ‘F’. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. ISO733x has integrated noise filter for harsh industrial environment where short noise pulses may be present at the device input pins. ISO733x has TTL input thresholds and operates from 3 V to 5.5 V supply levels. Through innovative chip design and layout techniques, electromagnetic compatibility of ISO733x has been significantly enhanced to enable system-level ESD, EFT, Surge and Emissions compliance.
filter Find other Digital isolators
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 10
Type Title Date
* Data sheet ISO733x Robust EMC, Low Power, Triple-Channel Digital Isolators datasheet (Rev. B) PDF | HTML 16 Apr 2015
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. W) 31 Jan 2024
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. C) PDF | HTML 07 Sep 2023
Certificate CQC Certificate for ISOxxDWx (Rev. J) 27 Mar 2023
Certificate CSA Certificate for ISO73xxDW 22 Feb 2023
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. P) 05 Aug 2022
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
EVM User's guide Universal Digital Isolator Evaluation Module PDF | HTML 04 Mar 2021
User guide ISO73xx Triple/Quad Digital Isolator Evaluation Module 24 Sep 2014

Design & development

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

Evaluation board

DIGI-ISO-EVM — Universal digital isolator evaluation module

DIGI-ISO-EVM is an evaluation module (EVM) used to evaluate any of the TI single-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin narrow-body SOIC (D), 8-pin wide-body SOIC (DWV), 16-pin wide-body SOIC (DW), 16-pin ultra- (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

ISO7331C IBIS Model

SLLM270.ZIP (29 KB) - IBIS Model
Download
Reference designs

TIDA-00281 — Automotive 48-V, 1-kW Motor Drive Reference Design

TIDA-00281 is a 3-phase brushless DC (BLDC) motor drive designed to operate in 48-V automotive applications. The board is designed to drive motors in the 1-kW range and can handle currents up to 30 A. The design includes analog circuits working in conjunction with a C2000 LaunchPad to spin a (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOIC (DW) 16 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