pca9512a NXP Semiconductors, pca9512a Datasheet - Page 10

• Manufacturer Part Number: pca9512a
• Description: Pca9512a Level Shifting Hot Swappable I2c-bus And Smbus Bus Buffer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PCA9512A_1
Product data sheet
Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9512A with a custom connector
Fig 9. 5 V to 3.3 V level translator and bus buffer
V
SDA
10 k
SCL
V
CC2
Remark: Application assumes bus capacitance within ‘proper operation’ region of
Remark: Application assumes bus capacitance within ‘proper operation’ region of
CC
R1
BACKPLANE
V
R2
10 k
CC
(5 V)
SDA
SCL
CONNECTOR
BACKPLANE
R1
10 k
R4
10 k
SDAIN
SCLIN
C2
0.01 F
Rev. 01 — 7 October 2005
V
PCA9512A
CC
Level shifting hot swappable I
R3
5.1
R7
5.1
GND
C2
C4
V
CC2
0.01 F
0.01 F
SDAOUT
SCLOUT
C1
0.01 F
PCA9512A
PCA9512A
ACC
V
SDAIN
SCLIN
V
SDAIN
SCLIN
CC
CC
I/O PERIPHERAL CARD 1
I/O PERIPHERAL CARD 2
R3
10 k
V
V
GND
GND
CC2
CC2
SDAOUT
SDAOUT
SCLOUT
SCLOUT
R2
10 k
C1
0.01 F
C3
0.01 F
ACC
ACC
Figure 5
Figure 5
002aab793
2
CARD_SDA
CARD_SCL
R4
10 k
R8
10 k
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
C-bus and SMBus bus buffer
and
and
CARD_V
Figure
Figure
R5
10 k
R9
10 k
PCA9512A
CC
6.
6.
(3 V)
R6
10 k
R10
10 k
CARD1_SDA
CARD1_SCL
CARD2_SDA
CARD2_SCL
002aab792
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