PCA9516A データシートの表示（PDF） - NXP Semiconductors.

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PCA9516A

5-channel I2C-bus hub

NXP Semiconductors. 

NXP Semiconductors

4. Block diagram

SCL0

SCL1

SCL2

SDA0

SDA1

SDA2

PCA9516A

5-channel I2C-bus hub

BUFFER

BUFFER

BUFFER

VCC

HUB

LOGIC

BUFFER

PCA9516A

BUFFER

BUFFER

BUFFER

BUFFER

HUB

LOGIC

BUFFER

BUFFER

SCL4

SCL3

SDA4

SDA3

EN1

EN2

GND

Fig 1. Block diagram

A more detailed view of Figure 1 buffer is shown in Figure 2.

002aae616

EN4

EN3

data

to output

in

Fig 2. Buffer detail

enable

inc

002aac531

The output pull-down of each internal buffer is set for approximately 0.5 V, while the input

threshold of each internal buffer is set about 0.07 V lower, when the output is internally

driven LOW. This prevents a lock-up condition from occurring.

PCA9516A_3

Product data sheet

Rev. 03 — 23 April 2009

© NXP B.V. 2009. All rights reserved.

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