PCA9534DBR datasheet(2/32 Pages) TI

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PCA9534

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

WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

SCPS124B – SEPTEMBER 2006 – REVISED FEBRUARY 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 PCA9534 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are

required due to the enhancements in the PCA9534 over the PCF8574.

The PCA9534 is a low-power version of the PCA9554. The only difference between the PCA9534 and PCA9554

is that the PCA9534 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

PCA9534RGTR

PREVIEW

QFN – RGV

Reel of 2500

PCA9534RGVR

PREVIEW

QSOP – DBQ

Reel of 2500

PCA9534DBQR

PD534

Tube of 40

PCA9534DW

SOIC – DW

PCA9534

Reel of 2000

PCA9534DWR

–40

°C to 85°C

Reel of 2000

PCA9534DBR

SSOP – DB

PD534

Tube of 80

PCA9534DBT

Tube of 90

PCA9534PW

TSSOP – PW

PD534

Reel of 2000

PCA9534PWR

TVSOP – DGV

Reel of 2000

PCA9534DGVR

PD534

(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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