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PCA9549 Datasheet(PDF) 15 Page - NXP Semiconductors

Part # PCA9549
Description  Octal bus switch with individually I2C-bus controlled enables
PDF  25 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9549 Datasheet(HTML) 15 Page - NXP Semiconductors

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PCA9549_2
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 13 July 2009
15 of 25
NXP Semiconductors
PCA9549
Octal bus switch with individually I2C-bus controlled enables
11. Application information
Remark: B can also be input and A can also be output as shown in bit 8.
Fig 16. Typical application
PCA9549
1A
1B
A1
A0
VSS
SDA
SCL
RESET
VDD = 5.0 V
VDD = 5.0 V
I2C-bus/SMBus
MASTER
SDA
SCL
bit 1
A2
2A
2B
bit 2
3A
3B
bit 3
4A
4B
bit 4
5A
5B
bit 5
6A
6B
bit 6
7A
7B
bit 7
8A
8B
bit 8
002aaa995
Fig 17. Custom multiplexer or demultiplexer application
RESET
SCL
SDA
002aac279
AB
C
D
E
AB
C
D
E



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