Product Model

PCA9556PW

Introduction

Remote 8-bit I/O expander for I2C-bus with interrupt

Brand and Manufacturer

Philips Electronics

Features

Low standby current consumption

I2C-bus to parallel port expander

Open-drain interrupt output

8-bit remote I/O pins for GPIO

Polarity inversion register

Active LOW reset input

Product Performance

Operating power supply voltage range of 2.3V to 5.5V

5 MHz I2C-bus interface speed

Latch-up testing to 100 mA

ESD protection exceeds 2000V HBM per JESD22-A114 and 1000V CDM per JESD22-C101

Technical Specifications

8 I/O pins which default to inputs at power-up

400 kHz Fast-mode I2C-bus

Schmitt trigger action allows slow input transition and better switching noise immunity at the SCL/SDA inputs

Open-drain interrupt output

Dimensions, Shape, and Packaging

TSSOP16 package

Body size 5 mm x 4.4 mm

Pitches with row spacing of 0.65 mm

Quality and Reliability

Qualified for automotive applications

Robust ESD protection

Product Advantages

Simplifies the expansion of I2C-bus for I/O capabilities

Reduces the need for microcontroller with many I/Os

Enables distributed I/O across I2C-bus to minimize bus traffic

Product Competitiveness

Competitive with other I/O expanders due to high-speed interface and interrupt capability

Strong reliability in automotive and industrial environments

Compatibility

Compatible with I2C-bus specification

Compatible with 3.3V and 5V systems

Standard Certification and Compliance

Reach compliant

RoHS compliant

Lifespan and Sustainability

Extended operating temperature range (-40°C to +85°C) supporting robust operation

Long-term support typical of Philips Industrial and Automotive-grade products

Actual Application Fields

Automotive electronics

Industrial control systems

Home automation

Personal electronics

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