PCA9512BD Просмотр технического описания (PDF) - NXP Semiconductors.

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производитель

PCA9512BD

Level shifting hot swappable I2C-bus and SMBus bus buffer

NXP Semiconductors. 

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

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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

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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. 6 — 1 March 2013

© NXP B.V. 2013. All rights reserved.

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