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PCA9543

2-channel I2C switch with interrupt logic and reset

Philips Electronics 

Philips Semiconductors

2-channel I2C switch with interrupt logic and reset

TYPICAL APPLICATION

VDD = 2.7 – 5.5 V

VDD = 3.3 V

SDA

SCL

SDA

SCL

INT

SD0

SC0

INT0

RESET

I2C SMBus MASTER

NOTE:

1. If the device generating the Interrupt has an open-drain output structure or

can be tri-stated, a pull-up resistor is required.

If the device generating the Interrupt has a totem-pole output structure and

cannot be tri-stated, a pull-up resistor is not required.

The Interrupt inputs should not be left floating.

A1

SD1

A0

SC1

VSS

INT1

PCA9543

Figure 12. Typical application

Product data sheet

PCA9543

V = 2.7 – 5.5 V

SEE NOTE (1)

CHANNEL 0

V = 2.7 – 5.5 V

SEE NOTE (1)

CHANNEL 1

SW00809

2004 Oct 01

8

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