PCA9554DB datasheet(2/36 Pages) TI

Part #	PCA9554DB

Description	REMOTE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

PCA9554

SCPS128B – JULY 2006 – REVISED AUGUST 2008 ........................................................................................................................................................ www.ti.com

The device's outputs (latched) have high-current drive capability for directly driving LEDs and low current

consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight

devices to share the same I2C bus or SMBus.

The PCA9554 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are

required, due to the enhancements in the PCA9554 over the PCF8574.

The PCA9554 and PCA9554A are identical except for their fixed I2C address. This allows for up to 16 of these

devices (eight of each) on the same I2C/SMBus.

ORDERING INFORMATION

TA

PACKAGE(1)(2)

ORDERABLE PART NUMBER

TOP-SIDE MARKING

QFN – RGT

Reel of 3000

PCA9554RGTR

PREVIEW

QFN – RGV

Reel of 2500

PCA9554RGVR

PREVIEW

QSOP – DBQ

Reel of 2500

PCA9554DBQR

PD554

Tube of 40

PCA9554DW

SOIC – DW

PCA9554

Reel of 2000

PCA9554DWR

–40°C to 85°C

Tube of 80

PCA9554DB

SSOP – DB

PD554

Reel of 2000

PCA9554DBR

Tube of 90

PCA9554PW

TSSOP – PW

PD554

Reel of 2000

PCA9554PWR

TVSOP – DGV

Reel of 2000

PCA9554DGVR

PD554

(1)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

(2)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

2

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