Texas Instruments

ISO7721DR

Digital Isolators

Manufacturer
MPN
ISO7721DR
Product Type
Package / Case
SOIC-8
Key Attributes
High-Speed, Robust EMC, Reinforced Dual-Channel Digital Isolators

Technical Specifications

TypeDescription
Supply V3.875 V
Tpd Ns11.0
Number of Forward Channels1
Number of Reverse Channels1
Data Rate(Max)100Mbps
Default OutputHigh Level
TypeDescription
FeaturesFail-safe output
Cmti Kvus100.0
Channels2.0
Working Voltage V3.875 V
Operating Temp-55°C ~ +125°C
Package / CaseSOIC-8

Product Introduction

The ISO772x devices are high-performance, dualchannel digital isolators with 5000 VRMS (DW and DWV packages) and 3000 VRMS (D package) isolation ratings per UL 1577. These devices are also certified by VDE, TUV, CSA, and CQC.

The ISO772x devices provide high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO₂) insulation barrier. The ISO7720 device has both channels in the same direction while the ISO7721 device has both channels in the opposite direction. In the event of input power or signal loss, the default output is high for devices without suffix F and low for devices with suffix F.

Used in conjunction with isolated power supplies, these devices help prevent noise currents on data buses, such as RS - 485, RS - 232, and CAN, from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO772x devices has been significantly enhanced to ease system - level ESD, EFT, surge, and emissions compliance. The ISO772x family of devices is available in 16 - pin SOIC widebody (DW), 8 - pin SOIC wide - body (DWV), and 8 - pin SOIC narrow - body (D) packages.

Features

  • 100 Mbps Data Rate
  • Robust Isolation Barrier:
  • >100 -Year Projected Lifetime at 1.5 kV RMS Working Voltage
  • Up to 5000 VRMS Isolation Rating
  • Up to 12.8 kV Surge Capability
  • ±100 kV/μs Typical CMTI
  • Wide Supply Range: 2.25 V to 5.5 V
  • 2.25 - V to 5.5 - V Level Translation
  • Default Output High (ISO772x) and Low (ISO772xF) Options
  • Wide Temperature Range: -55°C to +125°C
  • Low Power Consumption, Typical 1.7 mA per Channel at 1 Mbps
  • Low Propagation Delay: 11 ns Typical
  • Robust Electromagnetic Compatibility (EMC):
  • System - Level ESD, EFT, and Surge Immunity
  • ±8 kV IEC 61000 - 4 - 2 Contact Discharge Protection across Isolation Barrier
  • Low Emissions
  • Wide - SOIC (DW - 16, DWV - 8) and Narrow - SOIC (D - 8) Package Options
  • Automotive Version Available: ISO772x - Q1
  • Safety - Related Certifications:
  • VDE Reinforced Insulation according to DIN V VDE V 0884 - 11:2017 - 01
  • 5000 VRMS (DW - 16, DWV - 8) and 3000 VRMS (D - 8) Isolation Rating per UL 1577
  • CSA Certification per IEC 60950 - 1, IEC 62368 - 1 and IEC 60601 - 1 End Equipment Standards
  • CQC Certification per GB4943.1 - 2011
  • TUV Certification according to EN 60950 - 1 and EN 61010 - 1

Applications

  • - Industrial Automation - Motor Control - Power Supplies - Solar Inverters - Medical Equipment

Datasheet

📄 Open Download

Alternative Parts

Common ISO7721DR alternatives overseas buyers search for:

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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