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ISO7740, ISO7741, ISO7742

SLLSEP4G – MARCH 2016 – REVISED FEBRUARY 2020

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Product Folder Links: ISO7740 ISO7741 ISO7742

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Copyright © 2016–2020, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 1

4

Revision History..................................................... 2

5

Description Continued .......................................... 5

6

Pin Configuration and Functions ......................... 6

7

Specifications......................................................... 8

7.1

Absolute Maximum Ratings ...................................... 8

7.2

ESD Ratings.............................................................. 8

7.3

Recommended Operating Conditions ....................... 8

7.4

Thermal Information .................................................. 9

7.5

Power Rating............................................................. 9

7.6

Insulation Specifications.......................................... 10

7.7

Safety-Related Certifications................................... 11

7.8

Safety Limiting Values ............................................ 11

7.9

Electrical Characteristics—5-V Supply ................... 12

7.10

Supply Current Characteristics—5-V Supply ........ 13

7.11

Electrical Characteristics—3.3-V Supply .............. 14

7.12

Supply Current Characteristics—3.3-V Supply ..... 15

7.13

Electrical Characteristics—2.5-V Supply .............. 16

7.14

Supply Current Characteristics—2.5-V Supply ..... 17

7.15

Switching Characteristics—5-V Supply................. 18

7.16

Switching Characteristics—3.3-V Supply.............. 18

7.17

Switching Characteristics—2.5-V Supply.............. 19

7.18

Insulation Characteristics Curves ......................... 20

7.19

Typical Characteristics .......................................... 21

8

Parameter Measurement Information ................ 23

9

Detailed Description ............................................ 25

9.1

Overview ................................................................. 25

9.2

Functional Block Diagram ....................................... 25

9.3

Feature Description................................................. 26

9.4

Device Functional Modes........................................ 27

10

Application and Implementation........................ 29

10.1

Application Information.......................................... 29

10.2

Typical Application ................................................ 29

11

Power Supply Recommendations ..................... 32

12

Layout................................................................... 33

12.1

Layout Guidelines ................................................. 33

12.2

Layout Example .................................................... 33

13

Device and Documentation Support ................. 34

13.1

Documentation Support ........................................ 34

13.2

Related Links ........................................................ 34

13.3

Receiving Notification of Documentation Updates 34

13.4

Community Resources.......................................... 34

13.5

Trademarks ........................................................... 34

13.6

Electrostatic Discharge Caution ............................ 34

13.7

Glossary ................................................................ 35

14

Mechanical, Packaging, and Orderable

Information ........................................................... 35

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision F (May 2019) to Revision G

Page

•

Added ISO7741B device to the data sheet for applications that require basic insulation only .............................................. 1

•

Combined CSA, CQC, and TUV Features bullets into a single bullet ................................................................................... 1

•

Deleted "All certifications complete" bullet in Features .......................................................................................................... 1

Changes from Revision E (January 2018) to Revision F

Page

•

Made editorial and cosmetic changes throughout the document .......................................................................................... 1

•

in Features.............................................................................................................................................................................. 1

•

•

Added "Up to 12.8 kV surge capability" in Features .............................................................................................................. 1

•

Added "±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier" in Features ......................................... 1

•

Added "Automotive version available: ISO774x-Q1" in Features........................................................................................... 1

•

Changed From: "All Certifications Complete except CQC Approval of DBQ-16 Package Devices" To: "All

certifications complete" in Features ....................................................................................................................................... 1

•

Updated Simplified Schematic to show two isolation capacitors in series per channel instead of a single isolation

capacitor ................................................................................................................................................................................. 1

•

Added "Contact discharge per IEC 61000-4-2" specification of ±8000 V in ESD Ratings..................................................... 8

•

Added the following table note to Data rate specification: "100 Mbps is the maximum specified data rate, although

higher data rates are possible." ............................................................................................................................................. 8