PCA9511ADP,118 NXP Semiconductors, PCA9511ADP,118 Datasheet - Page 9

• Manufacturer Part Number: PCA9511ADP,118
• Description: IC HOTSWAP I2C/SMBUS BUFF 8TSSOP
• Manufacturer: NXP Semiconductors
• Type: I²C-Bus and SMBus Switchr

Specifications of PCA9511ADP,118

• Package / Case: 8-TSSOP
• Applications: Hot-Swap/SMB Buffer
• Internal Switch(s): Yes
• Current Limit: 50mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Logic Family: PCA
• Maximum Operating Temperature: 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Number Of Lines (input / Output): 3 / 3
• Propagation Delay Time: 70 ns
• Logic Type: Bus Buffer
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-3360-2; 935279308118; PCA9511ADP-T

NXP Semiconductors
PCA9511A_4
Product data sheet
Fig 7.
BD_SEL
SDA
SCL
V
CC
10 k
Remark: The PCA9511A can be used in any combination depending on the number of rise time accelerators that are needed
by the system. Normally only one PCA9511A would be required per bus.
Hot swapping multiple I/O cards into a backplane using the PCA9511A in a cPCI, VME, and AdvancedTCA
system
BACKPLANE
R1
8.9 Hot swapping and capacitance buffering application
R2
10 k
CONNECTOR
Figure 7
advantage of both its hot swapping and capacitance buffering features. In all of these
applications, note that if the I/O cards were plugged directly into the backplane, all of the
backplane and card capacitances would add directly together, making rise time and
fall time requirements difficult to meet. Placing a bus buffer on the edge of each card,
however, isolates the card capacitance from the backplane. For a given I/O card, the
PCA9511A drives the capacitance of everything on the card and the backplane must drive
only the capacitance of the bus buffer, which is less than 10 pF, the connector, trace, and
all additional cards on the backplane.
See Application Note AN10160, ‘Hot Swap Bus Buffer’ for more information on
applications and technical assistance.
BACKPLANE
through
Figure 10
Rev. 04 — 19 August 2009
illustrate the usage of the PCA9511A in applications that take
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
HOT SWAP
HOT SWAP
HOT SWAP
ENABLE
SDAIN
SCLIN
ENABLE
SDAIN
SCLIN
ENABLE
SDAIN
SCLIN
Hot swappable I
R3
10 k
R7
10 k
R11
10 k
I/O PERIPHERAL CARD N
I/O PERIPHERAL CARD 1
I/O PERIPHERAL CARD 2
GND
GND
GND
V
V
V
CC
CC
CC
SDAOUT
SCLOUT
SDAOUT
SCLOUT
SDAOUT
SCLOUT
READY
READY
READY
C1
0.01 F
C3
0.01 F
C5
0.01 F
2
C-bus and SMBus bus buffer
R4
10 k
R8
10 k
R12
10 k
PCA9511A
R5
10 k
R9
10 k
R13
10 k
© NXP B.V. 2009. All rights reserved.
R6
10 k
R10
10 k
R14
10 k
CARD1_SDA
CARD1_SCL
CARD2_SDA
CARD2_SCL
CARDN_SDA
CARDN_SCL
002aab584
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