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PCA9545

4-channel I2C switch with interrupt logic and reset

Philips Electronics 

Philips Semiconductors

4-channel I2C switch with interrupt logic and reset

TYPICAL APPLICATION

VDD = 2.7 – 5.5 V

SDA

SCL

I2C/SMBus MASTER

VDD = 3.3 V

SDA

SCL

INT

RESET

SD0

SC0

INT0

SD1

SC1

INT1

SD2

SC2

INT2

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

A0

SD3

VSS

SC3

INT3

PCA9545

Figure 12. Typical application

Product data

PCA9545

V = 2.7 – 5.5 V

SEE NOTE (1)

CHANNEL 0

V = 2.7 – 5.5 V

SEE NOTE (1)

CHANNEL 1

V = 2.7 – 5.5 V

SEE NOTE (1)

CHANNEL 2

V = 2.7 – 5.5 V

SEE NOTE (1)

CHANNEL 3

SW00810

2002 Mar 28

8

853-2302 27311

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