PCA9534ADGVR datasheet(2/35 Pages) TI

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PCA9534A

REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER

WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

SCPS141B – SEPTEMBER 2006 – REVISED MARCH 2007

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 PCA9534A is pin-to-pin and I2C address compatible with the PCF8574A. However, software changes are

required due to the enhancements in the PCA9534A over the PCF8574A.

The PCA9534A is a low-power version of the PCA9554A. The only difference between the PCA9534A and

PCA9554A is that the PCA9534A eliminates an internal I/O pullup resistor, which dramatically reduces power

consumption in the standby mode when the I/Os are held low.

The PCA9534A and PCA9534 are identical, except for their fixed I2C address. This allows for up to 16 of these

devices (8 of each) on the same I2C bus.

ORDERING INFORMATION

PACKAGE(1)

ORDERABLE PART NUMBER

TOP-SIDE MARKING

QFN – RGT

Reel of 3000

PCA9534ARGTR

PREVIEW

QFN – RGV

Reel of 2500

PCA9534ARGVR

PREVIEW

QSOP – DBQ

Reel of 2500

PCA9534ADBQR

PDA534A

Tube of 40

PCA9534ADW

SOIC – DW

PCA9534A

Reel of 2000

PCA9534ADWR

–40

°C to 85°C

Reel of 2000

PCA9534ADBR

SSOP – DB

PDA534A

Tube of 80

PCA9534ADB

Tube of 90

PCA9534APW

TSSOP – PW

PD534A

Reel of 2000

PCA9534APWR

TVSOP – DGV

Reel of 2000

PCA9534ADGVR

PD534A

(1)

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

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