PCA9512B(2011) Просмотр технического описания (PDF) - NXP Semiconductors.
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PCA9512B Datasheet PDF : 24 Pages
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NXP Semiconductors
PCA9512A; PCA9512B
Level shifting hot swappable I2C-bus and SMBus bus buffer
BACKPLANE
VCC2
BACKPLANE
CONNECTOR
VCC
SDA
SCL
R1
10 kΩ
R2
10 kΩ
I/O PERIPHERAL CARD 1
R3
5.1 Ω
C2
C1
0.01 μF
PCA9512A
VCC VCC2 SDAOUT
SDAIN
SCLOUT
SCLIN
0.01 μF
GND
ACC
R4
10 kΩ
R5
10 kΩ
R6
10 kΩ
CARD1_SDA
CARD1_SCL
I/O PERIPHERAL CARD 2
R7
5.1 Ω
C4
C3
0.01 μF
PCA9512A
VCC VCC2 SDAOUT
SDAIN
SCLOUT
SCLIN
0.01 μF
GND
ACC
R8
10 kΩ
R9
10 kΩ
R10
10 kΩ
CARD2_SDA
CARD2_SCL
002aab792
Remark: Application assumes bus capacitance within ‘proper operation’ region of Figure 5 and Figure 6.
Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9512A with a custom connector
VCC (5 V)
R1
R4
10 kΩ 10 kΩ
SDA
SCL
C2
0.01 μF
C1
0.01 μF
SDAIN
SCLIN
VCC VCC2
SDAOUT
PCA9512A SCLOUT
ACC
GND
R3
10 kΩ
R2
10 kΩ
CARD_VCC (3 V)
CARD_SDA
CARD_SCL
002aab793
Remark: Application assumes bus capacitance within ‘proper operation’ region of Figure 5 and Figure 6.
Fig 9. 5 V to 3.3 V level translator and bus buffer
PCA9512A_PCA9512B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 5 January 2011
© NXP B.V. 2011. All rights reserved.
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