PCA9846PW datasheet(32/32 Pages) NXP

32 / 32 page

NXP Semiconductors

PCA9846

4-channel ultra-low voltage, Fm+ I2C-bus switch with reset

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 9 November 2015

Document identifier: PCA9846

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

18. Contents

General description . . . . . . . . . . . . . . . . . . . . . . 1

Features and benefits . . . . . . . . . . . . . . . . . . . . 1

Ordering information . . . . . . . . . . . . . . . . . . . . . 2

3.1

Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 2

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pinning information . . . . . . . . . . . . . . . . . . . . . . 4

5.1

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5.2

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4

Functional description . . . . . . . . . . . . . . . . . . . 5

6.1

Device address . . . . . . . . . . . . . . . . . . . . . . . . . 5

6.2

Software Reset General Call, and device ID

addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6.2.1

Software Reset . . . . . . . . . . . . . . . . . . . . . . . . . 7

6.2.2

Device ID (PCA9846 ID field) . . . . . . . . . . . . . . 8

6.3

Control register . . . . . . . . . . . . . . . . . . . . . . . . . 9

6.3.1

Control register definition . . . . . . . . . . . . . . . . 10

6.4

RESET input . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.5

Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 10

6.6

Power-on reset requirements . . . . . . . . . . . . . 10

6.7

Voltage level translation between I2C-buses . 13

Characteristics of the I2C-bus . . . . . . . . . . . . 15

7.1

Write commands. . . . . . . . . . . . . . . . . . . . . . . 15

7.2

Read commands . . . . . . . . . . . . . . . . . . . . . . 15

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 16

Static characteristics . . . . . . . . . . . . . . . . . . . . 16

Dynamic characteristics . . . . . . . . . . . . . . . . . 19

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 22

Soldering of SMD packages . . . . . . . . . . . . . . 24

12.1

Introduction to soldering . . . . . . . . . . . . . . . . . 24

12.2

Wave and reflow soldering . . . . . . . . . . . . . . . 24

12.3

Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 24

12.4

Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 25

Soldering: PCB footprints. . . . . . . . . . . . . . . . 27

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Revision history . . . . . . . . . . . . . . . . . . . . . . . . 29

Legal information. . . . . . . . . . . . . . . . . . . . . . . 30

16.1

Data sheet status . . . . . . . . . . . . . . . . . . . . . . 30

16.2

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

16.3

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

16.4

Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Contact information. . . . . . . . . . . . . . . . . . . . . 31

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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