PCA9555A Datasheet (Low-voltage 16-bit I2C-bus I/O port)

Part: PCA9555A
Manufacturer: NXP Semiconductors (official site)
Size: 2.40 MB

PCA9555A Key Features

I2C-bus to parallel port expander
Operating power supply voltage range of 1.65 V to 5.5 V
Low standby current consumption
1.5 A (typical at 5 V VDD)
1.0 A (typical at 3.3 V VDD)
Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
Vhys = 0.10  VDD (typical)
5 V tolerant I/Os
Open-drain active LOW interrupt output (INT)
400 kHz Fast-mode I2C-bus

Other PCA9555A Datasheets

Manufacturer	Part Number	Description
Nexperia	PCA9555	Low-voltage 16-bit I2C-bus I/O port
Texas Instruments	PCA9555	Remote 16-bit I2C and SMBus I/O Expander

PCA9555A Description

The PCA9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and weak pull-up resistors for I2C-bus/SMBus applications. NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs, fan control, etc. In addition to providing a flexible set of GPIOs, the wide...

PCA9555A Applications

I2C-bus to parallel port expander
Operating power supply voltage range of 1.65 V to 5.5 V