PCA9554PW datasheet(2/20 Pages) PHILIPS

Part #	PCA9554PW

Description	8-bit I2C and SMBus I/O port with interrupt

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product data sheet

PCA9554/PCA9554A

8-bit I2C and SMBus I/O port with interrupt

2

2004 Sep 30

FEATURES

• Operating power supply voltage range of 2.3 to 5.5 V

• 5 V tolerant I/Os

• Polarity inversion register

• Active-LOW interrupt output

• Low stand-by current

• Noise filter on SCL/SDA inputs

• No glitch on power-up

• Internal power-on reset

• 8 I/O pins which default to 8 inputs

• 0 to 400 kHz clock frequency

• ESD protection exceeds 2000 V HBM per JESD22-A114,

200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101

• Latch-up testing is done to JESDEC Standard JESD78 which

exceeds 100 mA

• Six packages offered: DIP16, SO16, SSOP16, SSOP20,

TSSOP16, and HVQFN16

DESCRIPTION

The PCA9554 and PCA9554A are 16-pin CMOS devices that

provide 8 bits of General Purpose parallel Input/Output (GPIO)

expansion for I2C/SMBus applications and were developed to

enhance the Philips family of I

@C I/O expanders. The improvements

include higher drive capability, 5V I/O tolerance, lower supply

current, individual I/O configuration, 400 kHz clock frequency, and

smaller packaging. I/O expanders provide a simple solution when

additional I/O is needed for ACPI power switches, sensors,

pushbuttons, LEDs, fans, etc.

The PCA9554/54A consist of an 8-bit Configuration register (Input or

Output selection); 8-bit Input register, 8-bit Output register and an

8-bit Polarity inversion register (Active-HIGH or Active-LOW

operation). The system master can enable the I/Os as either inputs

or outputs by writing to the I/O configuration bits. The data for each

Input or Output is kept in the corresponding Input or Output register.

The polarity of the read register can be inverted with the Polarity

Inversion Register. All registers can be read by the system master.

Although pin to pin and I2C address compatible with the PCF8574

series, software changes are required due to the enhancements and

are discussed in

Application Note AN469.

The PCA9554/54A open-drain interrupt output is activated when any

input state differs from its corresponding input port register state and

is used to indicate to the system master that an input state has

changed. The power-on reset sets the registers to their default

values and initializes the device state machine.

Three hardware pins (A0, A1, A2) vary the fixed I2C address and

allow up to eight devices to share the same I2C/SMBus. The

PCA9554A is identical to the PCA9554 except that the fixed I2C

address is different allowing up to sixteen of these devices (eight of

each) on the same I2C/SMBus.

ORDERING INFORMATION

PACKAGES

TEMPERATURE

RANGE

ORDER CODE

TOPSIDE MARK

DRAWING NUMBER

16-Pin Plastic DIP

–40

°C to +85 °C

PCA9554N

SOT38-1

16-Pin Plastic SO (wide)

–40

°C to +85 °C

PCA9554D

SOT162-1

16-Pin Plastic SSOP

–40

°C to +85 °C

PCA9554DB

9554DB

SOT338-1

20-Pin Plastic SSOP

–40

°C to +85 °C

PCA9554TS

PCA9554

SOT266-1

16-Pin Plastic TSSOP

–40

°C to +85 °C

PCA9554PW

9554DH

SOT403-1

16-Pin Plastic HVQFN

–40

°C to +85 °C

PCA9554BS

9554

SOT629-1

16-Pin Plastic DIP

–40

°C to +85 °C

PCA9554AN

SOT38-1

16-Pin Plastic SO (wide)

–40

°C to +85 °C

PCA9554AD

SOT162-1

16-Pin Plastic SSOP

–40

°C to +85 °C

PCA9554ADB

9554A

SOT338-1

20-Pin Plastic SSOP

–40

°C to +85 °C

PCA9554ATS

PA9554A

SOT266-1

16-Pin Plastic TSSOP

–40

°C to +85 °C

PCA9554APW

9554ADH

SOT403-1

16-Pin Plastic HVQFN

–40

°C to +85 °C

PCA9554ABS

554A

SOT629-1

Standard packing quantities and other packaging data are available at www.philipslogic.com/packaging.

I2C is a trademark of Philips Semiconductors Corporation.

SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I2C patent.

Similar Part No. - PCA9554PW

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