PCA9511ADP View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCA9511ADP Datasheet PDF : 24 Pages
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NXP Semiconductors
PCA9511A
Hot swappable I2C-bus and SMBus bus buffer
BACKPLANE
BACKPLANE
CONNECTOR
VCC
R1
10 kΩ
R2
10 kΩ
SDA
SCL
I/O PERIPHERAL CARD 1
C1
0.01 µF
R4
10 kΩ
R5
10 kΩ
R6
10 kΩ
C2
0.01 µF
ENABLE VCC SDAOUT
SDAIN
SCLOUT
SCLIN
READY
GND
CARD1_SDA
CARD1_SCL
I/O PERIPHERAL CARD 2
C3
0.01 µF
R8
10 kΩ
R9
10 kΩ
R10
10 kΩ
C4
0.01 µF
ENABLE VCC SDAOUT
SDAIN
SCLOUT
SCLIN
READY
GND
CARD2_SDA
CARD2_SCL
002aab585
Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9511A in a PCI system
VCC = 5 V
R1
R4
10 kΩ 10 kΩ
SDA1
SCL1
to other
System 1
devices
I2C-bus System 1
I2C-bus System 2
C1
0.01 µF
VCC
ENABLE SDAOUT
SDAIN
SCLOUT
SCLIN
READY
GND
R5
10 kΩ
R2
10 kΩ
R3
10 kΩ
R6
10 kΩ
long
distance
bus
C2
0.01 µF
VCC
SDAOUT ENABLE
SCLOUT
SDAIN
READY
SCLIN
GND
VCC
R7
R8
10 kΩ 10 kΩ
SDA1
SCL1
to other
System 2
devices
002aab586
Fig 9.
Remark: See Application Note AN255, ‘I2C repeaters, hubs, and expanders’ for more information on other devices better
optimized for long distance transmission of the I2C-bus or SMBus.
Repeater/bus extender application using the PCA9511A
PCA9511A_4
Product data sheet
Rev. 04 — 19 August 2009
© NXP B.V. 2009. All rights reserved.
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