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PCA9544AD Datasheet(PDF) 31 Page - NXP Semiconductors |
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PCA9544AD Datasheet(HTML) 31 Page - NXP Semiconductors |
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31 / 31 page ![]() NXP Semiconductors PCA9544A 4-channel I2C-bus multiplexer with interrupt logic © NXP Semiconductors N.V. 2014. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 23 April 2014 Document identifier: PCA9544A Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. 20. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 3.1 Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 6 Functional description . . . . . . . . . . . . . . . . . . . 6 6.1 Device addressing . . . . . . . . . . . . . . . . . . . . . . 6 6.2 Control register . . . . . . . . . . . . . . . . . . . . . . . . . 6 6.2.1 Control register definition . . . . . . . . . . . . . . . . . 6 6.3 Interrupt handling . . . . . . . . . . . . . . . . . . . . . . . 7 6.4 Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.5 Voltage translation . . . . . . . . . . . . . . . . . . . . . . 8 7 Characteristics of the I2C-bus . . . . . . . . . . . . . 9 7.1 Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.2 START and STOP conditions . . . . . . . . . . . . . . 9 7.3 System configuration . . . . . . . . . . . . . . . . . . . . 9 7.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.5 Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 11 8 Application design-in information . . . . . . . . . 12 9 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 13 10 Thermal characteristics . . . . . . . . . . . . . . . . . 13 11 Static characteristics . . . . . . . . . . . . . . . . . . . . 14 12 Dynamic characteristics . . . . . . . . . . . . . . . . . 16 13 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 18 14 Soldering of SMD packages . . . . . . . . . . . . . . 21 14.1 Introduction to soldering . . . . . . . . . . . . . . . . . 21 14.2 Wave and reflow soldering . . . . . . . . . . . . . . . 21 14.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 21 14.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 22 15 Soldering: PCB footprints. . . . . . . . . . . . . . . . 24 16 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 27 17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 28 18 Legal information. . . . . . . . . . . . . . . . . . . . . . . 29 18.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 29 18.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 18.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 18.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 30 19 Contact information. . . . . . . . . . . . . . . . . . . . . 30 20 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 |
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