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PCA9540BDP Datasheet(PDF) 22 Page - NXP Semiconductors

Part # PCA9540BDP
Description  2-channel I2C-bus multiplexer
PDF  22 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9540BDP Datasheet(HTML) 22 Page - NXP Semiconductors

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NXP Semiconductors
PCA9540B
2-channel I2C-bus multiplexer
© NXP B.V. 2009.
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: 3 September 2009
Document identifier: PCA9540B_4
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
18. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
5.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6
Functional description . . . . . . . . . . . . . . . . . . . 4
6.1
Device addressing . . . . . . . . . . . . . . . . . . . . . . 4
6.2
Control register . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2.1
Control register definition . . . . . . . . . . . . . . . . . 4
6.3
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.4
Voltage translation . . . . . . . . . . . . . . . . . . . . . . 5
7
Characteristics of the I2C-bus. . . . . . . . . . . . . . 6
7.1
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.2
START and STOP conditions . . . . . . . . . . . . . . 6
7.3
System configuration . . . . . . . . . . . . . . . . . . . . 7
7.4
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.5
Bus transactions . . . . . . . . . . . . . . . . . . . . . . . . 8
8
Application design-in information . . . . . . . . . . 8
9
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 9
10
Static characteristics. . . . . . . . . . . . . . . . . . . . 10
11
Dynamic characteristics . . . . . . . . . . . . . . . . . 12
12
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 14
13
Soldering of SMD packages . . . . . . . . . . . . . . 17
13.1
Introduction to soldering . . . . . . . . . . . . . . . . . 17
13.2
Wave and reflow soldering . . . . . . . . . . . . . . . 17
13.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 17
13.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 18
14
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 19
15
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 20
16
Legal information. . . . . . . . . . . . . . . . . . . . . . . 21
16.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 21
16.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
16.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
16.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
17
Contact information. . . . . . . . . . . . . . . . . . . . . 21
18
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22



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