PCA9525D NXP [NXP Semiconductors], PCA9525D Datasheet - Page 13

• Manufacturer Part Number: PCA9525D
• Description: Simple 2-wire bus buffer
• Manufacturer: NXP [NXP Semiconductors]

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