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PCA9549 Datasheet(PDF) 24 Page - NXP Semiconductors

Part # PCA9549
Description  Octal bus switch with individually I2C-bus controlled enables
PDF  24 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCA9549 Datasheet(HTML) 24 Page - NXP Semiconductors

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Philips Semiconductors
PCA9549
Octal bus switch with individually I2C-bus controlled enables
© Koninklijke Philips Electronics N.V. 2006.
All rights reserved.
For more information, please visit: http://www.semiconductors.philips.com.
For sales office addresses, email to: sales.addresses@www.semiconductors.philips.com.
Date of release: 11 July 2006
Document identifier: PCA9549_1
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
19. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
3.1
Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 2
4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
5.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6
Functional description . . . . . . . . . . . . . . . . . . . 5
6.1
Device addressing . . . . . . . . . . . . . . . . . . . . . . 5
6.2
Control register . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.2.1
Control register definition . . . . . . . . . . . . . . . . . 5
6.3
RESET input . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.4
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.5
CBT characteristic over VDD range . . . . . . . . . . 6
7
Characteristics of the I2C-bus. . . . . . . . . . . . . . 8
7.1
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1.1
START and STOP conditions . . . . . . . . . . . . . . 8
7.2
System configuration . . . . . . . . . . . . . . . . . . . . 8
7.3
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.4
Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 10
8
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 10
9
Static characteristics. . . . . . . . . . . . . . . . . . . . 11
10
Dynamic characteristics . . . . . . . . . . . . . . . . . 13
11
Application information. . . . . . . . . . . . . . . . . . 15
12
Test information . . . . . . . . . . . . . . . . . . . . . . . . 16
13
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 17
14
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
14.1
Introduction to soldering surface mount
packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
14.2
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 20
14.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 20
14.4
Manual soldering . . . . . . . . . . . . . . . . . . . . . . 21
14.5
Package related soldering information . . . . . . 21
15
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 22
16
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 22
17
Legal information. . . . . . . . . . . . . . . . . . . . . . . 23
17.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 23
17.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
17.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
17.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
18
Contact information. . . . . . . . . . . . . . . . . . . . . 23
19
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24



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