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ISO7721DR
  • ISO7721DR

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ISO7721DR Overview

The ISO772x devices are high-performance, dual-channel digital isolators with 5000 VRMS (DW and DWV packages) and 3000 VRMS (D package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO7721B device is designed for applications that require basic insulation ratings only.

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. See the Device Functional Modes section for further details.

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 wide-body (DW), 8-pin SOIC wide-body (DWV), and 8-pin SOIC narrow-body (D) packages.

ISO7721DR

Features

  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-Year projected lifetime at 1.5 kVRMS 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:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • CSA, CQC and TUV certifications

Product Parameters

  • genericPartNumber

    ISO7721

  • partDescription

    Robust EMC, dual-channel, 1/1, reinforced digital isolator

  • statusDescription

    This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

  • packageQtyCarrier

    2500|LARGE T&R

  • orderablePartNumber

    ISO7721DR

  • statusDisplay

    ACTIVE

  • packageQuantity

    2500

  • packagePins

    SOIC (D)|8

Technical Documents

  • Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A)Details>>

  • Isolation Glossary (Rev. A)Details>>

  • ISO7721-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMADetails>>

  • Considerations for Selecting Digital IsolatorsDetails>>

Other distributor's price

Distributor Part # Mfg. Description Price
digikey ISO7721DR Texas Instruments DGTL ISO 3000VRMS 2CH GP 8SOIC

2500---$1.0200

arrow ISO7721DR Texas Instruments Digital Isolator CMOS 2-CH 100Mbps Automotive 8-Pin SOIC T/R

2500---$0.8160

mouser ISO7721DR Texas Instruments Digital Isolators Robust EMC, dual-channel, 1/1, reinforced digital isolator 8-SOIC -55 to 125

1---$2.5500

10---$2.3000

25---$2.1700

75---$1.8400

300---$1.7200

525---$1.5100

1050---$1.2500