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APPLICATION INFORMATION

SD0

12

13

11

3

5

9

6

10

4

8

2

7

1

SC0

PCA9543A

V

CC

=2.7Vto5.5V

V

CC

=2.7Vto5.5V

Channel0

Channel1

SeeNote A

SeeNote A

SDA

SCL

V

CC

SDA

SCL

I C/SMBus

Master

2

V

=3.3V

CC

V

=2.7Vto5.5V

CC

INT

INT0

SD1

SC1

INT1

RESET

A1

GND

A0

NOTE:

A.

B. PinnumbersshownarefortheDandPWpackages.

Ifthedevicegeneratingtheinterrupthasanopen-drainoutputstructureorcanbe3-stated,a

pullupresistorisrequired.

Ifthedevicegeneratingtheinterrupthasatotem-poleoutputstructureandcannotbe3-stated,

apullupresistorisnotrequired.

Theinterruptinputsshouldnotbeleftfloating.

PCA9543A

WITH INTERRUPT LOGIC AND RESET

SCPS169 – SEPTEMBER 2007

Figure 14 shows an application in which the PCA9543A can be used.

Figure 14. Typical Application

14

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Product Folder Link(s): PCA9543A