ISO7842FDWR datasheet(2/40 Pages) TI2

2 / 40 page

Table of Contents

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

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

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

4 Pin Configuration and Functions...................................2

Pin Functions.................................................................... 2

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...................................... 8

5.8 Safety Limiting Values.................................................8

5.9 Electrical Characteristics–5V Supply.......................... 9

5.10 Supply Current Characteristics–5V Supply...............9

5.11 Electrical Characteristics—3.3V Supply..................10

5.12 Supply Current Characteristics—3.3V Supply........ 10

5.13 Electrical Characteristics—2.5V Supply..................11

5.14 Supply Current Characteristics—2.5V Supply........ 11

5.15 Switching Characteristics—5V Supply....................12

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

5.17 Switching Characteristics—2.5V Supply.................14

5.18 Insulation Characteristics Curves........................... 15

5.19 Typical Characteristics............................................ 16

6 Detailed Description......................................................19

6.1 Overview................................................................... 19

6.2 Functional Block Diagram......................................... 19

6.3 Feature Description...................................................20

6.4 Device Functional Modes..........................................21

7 Application and Implementation.................................. 22

7.1 Application Information............................................. 22

7.2 Typical Application.................................................... 22

8 Power Supply Recommendations................................24

9 Layout.............................................................................25

9.1 Layout Guidelines..................................................... 25

9.2 Layout Example........................................................ 25

10 Device and Documentation Support..........................26

10.1 Documentation Support.......................................... 26

10.2 Related Links.......................................................... 26

10.3 Receiving Notification of Documentation Updates..26

10.4 Community Resources............................................26

10.5 Trademarks.............................................................26

11 Revision History.......................................................... 26

12 Mechanical, Packaging, and Orderable

Information.................................................................... 28

4 Pin Configuration and Functions

GND1

GND2

EN1

EN2

OUTD

IND

OUTC

INC

INB

OUTB

INA

OUTA

GND1

GND2

VCC1

VCC2

Figure 4-1. DW and DWW Packages 16-Pin SOIC Top View

Pin Functions

I/O

DESCRIPTION

NAME

NO.

EN1

Output enable 1. Output pins on side 1 are enabled when EN1 is high or open and in high-

impedance state when EN1 is low.

EN2

Output enable 2. Output pins on side 2 are enabled when EN2 is high or open and in high-

impedance state when EN2 is low.

ISO7842, ISO7842F

SLLSEJ0H – OCTOBER 2014 – REVISED MARCH 2024

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