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P15

P14

P13

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PCA9535

SCPS129J – AUGUST 2005 – REVISED JUNE 2014

and Configuration Registers

1 Features

2 Description

This 16-bit I/O expander for the two-line bidirectional

1

•

Low Standby-Current Consumption of 1

μA Max

•

operation. It provides general-purpose remote I/O

•

Open-Drain Active-Low Interrupt Output

interface [serial clock (SCL), serial data (SDA)].

•

5-V Tolerant I/O Ports

•

Compatible With Most Microcontrollers

The PCA9535 consists of two 8-bit Configuration

(input or output selection), Input Port, Output Port,

•

and Polarity Inversion (active-high or active-low

•

Address by Three Hardware Address Pins for Use

operation) registers. At power on, the I/Os are

of up to Eight Devices

configured as inputs. The system master can enable

•

Polarity Inversion Register

the I/Os as either inputs or outputs by writing to the

I/O configuration bits. The data for each input or

•

Latched Outputs With High-Current Drive

output is kept in the corresponding Input or Output

Capability for Directly Driving LEDs

Port register. The polarity of the Input Port register

•

Latch-Up Performance Exceeds 100 mA Per

can be inverted with the Polarity Inversion register. All

JESD 78, Class II

registers can be read by the system master.

•

ESD Protection Exceeds JESD 22

The system master can reset the PCA9535 in the

–

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

event of a timeout or other improper operation by

–

1000-V Charged-Device Model (C101)

utilizing the power-on reset feature, which puts the

registers in their default state and initializes the

The PCA9535 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.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SSOP (16)

6.20 mm × 5.30 mm

PCA9535

VQFN (16)

4.00 mm × 4.00 mm

QFN (16)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.