NXP PCF8574AP DIP Interface – Remote I/O Expanders

Specifications:

I2C-bus to parallel port expander
100 kHz I2C-bus interface (Standard-mode I2C-bus)
Operating supply voltage 2.5 V to 6 V with non-overvoltage tolerant I/O held to VDD
with 100A current source
8-bit remote I/O pins that default to inputs at power-up
Latched outputs directly drive LEDs
Total package sink capability of 80 mA
Active LOW open-drain interrupt output
Eight programmable slave addresses using three address pins

SKU: RDNA-119.10

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Description

The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire
The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire
bidirectional I2C-bus (serial clock (SCL), serial data (SDA)).

The devices consist of eight quasi-bidirectional ports, 100 kHz I2C-bus interface, three
hardware address inputs and interrupt output operating between 2.5 V and 6 V.

The quasi-bidirectional port can be independently assigned as an input to monitor interrupt
status or keypads, or as an output to activate indicator devices such as LEDs. System
master can read from the input port or write to the output port through a single register

Datasheet available here.

Package Includes:

1 x NXP PCF8574AP IC