PCA9538DBRG4 datasheet(2/31 Pages) TI

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

PCA9538

SCPS126E – SEPTEMBER 2006 – REVISED JUNE 2008 ................................................................................................................................................ www.ti.com

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the

remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via

the I2C bus. Thus, the PCA9538 can remain a simple slave device.

The device outputs (latched) have high-current drive capability for directly driving LEDs. It has low current

consumption.

Two hardware pins (A0 and A1) are used to program and vary the fixed I2C address and allow up to four devices

to share the same I2C bus or SMBus.

ORDERING INFORMATION

PACKAGE(1)(2)

ORDERABLE PART NUMBER

TOP-SIDE MARKING

QFN – RGT

Reel of 3000

PCA9538RGTR

ZWZ

QFN – RGV

Reel of 2500

PCA9538RGVR

PREVIEW

QSOP – DBQ

Reel of 2500

PCA9538DBQR

PD538

Tube of 40

PCA9538DW

SOIC – DW

PCA9538

Reel of 2000

PCA9538DWR

–40°C to 85°C

Reel of 2000

PCA9538DBR

SSOP – DB

PD538

Tube of 80

PCA9538DB

Tube of 90

PCA9538PW

TSSOP – PW

PD538

Reel of 2000

PCA9538PWR

TVSOP – DGV

Reel of 2000

PCA9538DGVR

PD538

(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.

TERMINAL FUNCTIONS

NO.

QSOP (DBQ),

NAME

DESCRIPTION

SSOP (DB),

QFN (RGT) OR

TSSOP (PW), OR

QFN (RGV)

TVSOP (DGV)

Address input. Connect directly to VCC or ground.

Active-low reset input. Connect to VCC through a pullup resistor if no active

RESET

connection is used.

P-port input/output. Push-pull design structure.

GND

Ground

P-port input/output. Push-pull design structure.

INT

Interrupt output. Connect to VCC through a pullup resistor.

SCL

Serial clock bus. Connect to VCC through a pullup resistor.

SDA

Serial data bus. Connect to VCC through a pullup resistor.

VCC

Supply voltage

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