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PCA9525 датащи(PDF) 13 Page - NXP Semiconductors

номер детали PCA9525
подробное описание детали  Simple 2-wire bus buffer
PDF  22 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9525 датащи(HTML) 13 Page - NXP Semiconductors

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PCA9525
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 25 February 2011
13 of 22
NXP Semiconductors
PCA9525
Simple 2-wire bus buffer
Fig 17. PCA9525 bus multiplexer application driven from a simple logic device
Fig 18. PCA9525 bus multiplexer application driven from an I2C-bus I/O expander
R1
1.8 k
Ω
R2
1.8 k
Ω
5 V
002aaf345
SCL
SDA
SCL_IN
SDA_IN
PCA9525
VDD
SCL_OUT
SDA_OUT
U1
A
B
74LS137
VCC
Y0
Y1
U3
Y2
Y3
C
Y4
Y5
Y6
Y7
5 V
isolated bus with
400 pF load capacitance
3-to-8
demultiplexer
SCL
SDA
EN
DIR
SCL_IN
SDA_IN
PCA9605
VDD
SCL_OUT
SDA_OUT
U2
SCL
SDA
EN
DIR
isolated bus with
4 nF load capacitance
R1
1.1 k
Ω
R2
1.1 k
Ω
3.3 V
002aaf346
SCL
SDA
SCL_IN
SDA_IN
PCA9525
VDD
SCL_OUT
SDA_OUT
U1
SCL
PCA9536
VDD
IO0
IO1
U3
IO2
IO3
SDA
3.3 V
isolated bus with
400 pF load capacitance
I2C-bus
I/O expander
SCL
SDA
EN
DIR
SCL_IN
SDA_IN
PCA9605
VDD
SCL_OUT
SDA_OUT
U2
SCL
SDA
EN
DIR
isolated bus with
4 nF load capacitance



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