PCA9544APW datasheet(9/18 Pages) PHILIPS

Part #	PCA9544APW

Description	4-channel IC multiplexer with interrupt logic

PDF	18 Pages

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product data sheet

PCA9544A

4-channel I2C multiplexer with interrupt logic

2004 Sep 29

TYPICAL APPLICATION

PCA9544A

V = 2.7 – 5.5 V

SD0

SC0

V = 2.7 – 5.5 V

SD1

SC1

VSS

SDA

SCL

VDD = 3.3 V

VDD = 2.7 – 5.5 V

I2C/SMBus MASTER

SW02268

SDA

SCL

INT

INT1

INT0

CHANNEL 0

CHANNEL 1

V = 2.7 – 5.5 V

SD1

SC1

INT2

CHANNEL 2

V = 2.7 – 5.5 V

SD1

SC1

INT3

CHANNEL 3

NOTE:

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.

SEE NOTE (1)

Figure 13. Typical application

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