High-Speed, Low-Power, Robust EMC Quad-Channel Digital Isolator - ISO7741

ISO7741 (ACTIVE)

High-Speed, Low-Power, Robust EMC Quad-Channel Digital Isolator

 

Description

The ISO774x devices are high-performance, quad-channel digital isolators with 5000 VRMS (DW package) and 2500 VRMS (DBQ package) isolation ratings per UL 1577. This family of devices has reinforced insulation ratings according to VDE, CSA, TUV and CQC.

The ISO774x 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 silicon dioxide (SiO2) insulation barrier. This device comes with enable pins which can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. The ISO7740 device has all four channels in the same direction, the ISO7741 device has three forward and one reverse-direction channels, and the ISO7742 device has two forward and two reverse-direction channels. If the input power or signal is lost, 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, this device helps prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISO774x devices have been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO774x devices are available in 16-pin SOIC and QSOP packages.

Features

  • Signaling Rate: Up to 100 Mbps
  • Wide Supply Range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V Level Translation
  • Default Output High and Low Options
  • Wide Temperature Range: –55°C to 125°C
  • Low Power Consumption, Typical 1.5 mA per Channel at 1 Mbps
  • Low Propagation Delay: 10.7 ns Typical
    (5-V Supplies)
  • High CMTI: ±100 kV/µs Typical
  • Robust Electromagnetic Compatibility (EMC)
    • System-Level ESD, EFT, and Surge Immunity
    • Low Emissions
  • Isolation Barrier Life: >40 Years
  • Wide-SOIC (DW-16) and QSOP (DBQ-16) Package Options
  • Safety-Related Certifications:
    • DIN V VDE V 0884-10 (VDE V 0884-10):
      2006-12
    • UL 1577 Component Recognition Program
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 60601-1 End Equipment Standards
    • CQC Approval per GB4943.1-2011
    • TUV Certification according to EN 60950-1 and EN 61010-1
    • Certifications for DW Package Complete; All Other Certifications are Planned

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Parametrics Compare all products in Digital Isolators

 
Integrated Isolated Power
Number of Channels (#)
Forward/Reverse Channels
Isolation Rating (Vrms)
Surge Voltage Rating (Vpk)
Data Rate (Max) (Mbps)
Propagation Delay (Typ) (ns)
Default Output
VCC (Min) (V)
VCC (Max) (V)
Rating
Operating Temperature Range (C)
Pin/Package
ISO7741 ISO7741F ISO7740 ISO7742
No    No    No    No   
4    4    4    4   
3/1    3/1    4/0    2/2   
5000
2500   
5000
2500   
5000
2500   
5000
2500   
8000
4000   
8000
4000   
8000
4000   
8000
4000   
100    100    100    100   
10.7    10.7    10.7    10.7   
High    Low    High    High   
2.25    2.25    2.25    2.25   
5.5    5.5    5.5    5.5   
Catalog    Catalog    Catalog    Catalog   
-55 to 125    -55 to 125    -55 to 125    -55 to 125   
16SOIC
16SSOP   
16SOIC
16SSOP   
16SOIC
16SSOP   
16SOIC
16SSOP   

Other qualified versions of ISO7741

Version Part Number Definition
Automotive ISO7741-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects