DB,DBQ,DGV,DW,ORPWPACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

A0

A1

A2

P0

P1

P2

P3

GND

V

CC

SDA

SCL

INT

P7

P6

P5

P4

RGVPACKAGE

(TOP VIEW)

16

6

8

2

10

P7

4

3

1

7

5

12

11

9

13

14

15

P6

INT

SCL

A2

P0

P1

P2

RGTPACKAGE

(TOP VIEW)

16

6

8

2

10

P7

4

3

1

7

5

12

11

9

13

14

15

P6

INT

SCL

A2

P0

P1

P2

PCA9534A

www.ti.com

SCPS141F – SEPTEMBER 2006 – REVISED JUNE 2010

WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

Check for Samples: PCA9534A

1

FEATURES

•

Low Standby Current Consumption of

•

Polarity Inversion Register

1 mA Max

•

Internal Power-On Reset

•

•

Power-Up With All Channels Configured as

•

Open-Drain Active-Low Interrupt Output

Inputs

•

Operating Power-Supply Voltage Range of

•

No Glitch on Power-Up

2.3 V to 5.5 V

•

Noise Filter on SCL/SDA Inputs

•

5-V Tolerant I/O Ports

•

Latched Outputs With High-Current Drive

•

Maximum Capability for Directly Driving LEDs

•

Three Hardware Address Pins Allow Up to

•

Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

•

•

ESD Protection Exceeds JESD 22

When Used in Conjunction with the PCA9534

–

2000-V Human-Body Model (A114-A)

–

200-V Machine Model (A115-A)

•

Input/Output Configuration Register

–

1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

(SCL), serial data (SDA)].

The PCA9534A consists of one 8-bit configuration (input or output selection), input port, output port, and polarity

inversion (active high or active low) register. At power on, the I/Os are configured as inputs. However, 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 input port register can be

inverted with the polarity inversion register. All registers can be read by the system master.

The system master can reset the PCA9534A in the event of a timeout or other improper operation by utilizing the

The PCA9534A open-drain interrupt (INT) 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.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2010, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.