ISO7842 datasheet(2/39 Pages) TI2

2 / 39 page

Table of Contents

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

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Pin Configuration and Functions...................................3

Pin Functions.................................................................... 3

5 Specifications.................................................................. 4

5.1 Absolute Maximum Ratings........................................ 4

5.2 ESD Ratings............................................................... 4

5.3 Recommended Operating Conditions.........................4

5.4 Thermal Information....................................................5

5.5 Power Ratings.............................................................5

5.6 Insulation Specifications............................................. 6

5.7 Safety-Related Certifications...................................... 7

5.8 Safety Limiting Values.................................................7

5.9 Electrical Characteristics–5V Supply.......................... 8

5.10 Supply Current Characteristics–5V Supply...............8

5.11 Electrical Characteristics—3.3V Supply....................9

5.12 Supply Current Characteristics—3.3V Supply.......... 9

5.13 Electrical Characteristics—2.5V Supply..................10

5.14 Supply Current Characteristics—2.5V Supply........ 10

5.15 Switching Characteristics—5V Supply.................... 11

5.16 Switching Characteristics—3.3V Supply.................12

5.17 Switching Characteristics—2.5V Supply.................13

5.18 Insulation Characteristics Curves........................... 14

5.19 Typical Characteristics............................................ 15

6 Parameter Measurement Information.......................... 16

7 Detailed Description......................................................18

7.1 Overview................................................................... 18

7.2 Functional Block Diagram......................................... 18

7.3 Feature Description...................................................19

7.4 Device Functional Modes..........................................19

8 Application and Implementation.................................. 20

8.1 Application Information............................................. 20

8.2 Typical Application.................................................... 20

8.3 Power Supply Recommendations.............................22

8.4 Layout....................................................................... 23

9 Device and Documentation Support............................24

9.1 Documentation Support............................................ 24

9.2 Related Links............................................................ 24

9.3 Receiving Notification of Documentation Updates....24

9.4 Support Resources................................................... 24

9.5 Trademarks...............................................................24

9.6 Electrostatic Discharge Caution................................24

9.7 Glossary....................................................................24

10 Revision History.......................................................... 24

11 Mechanical, Packaging, and Orderable

Information.................................................................... 27

ISO7842, ISO7842F

SLLSEJ0I – OCTOBER 2014 – REVISED JULY 2025

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