Download the PCF8574A datasheet PDF.
This datasheet also covers the PCF8574 variant, as both devices belong to the same remote 8-bit i/o expander family and are provided as variant models within a single manufacturer datasheet.
General Description
The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire bidirectional I2C-bus (serial clock (SCL), serial data (SDA)).
Note: The manufacturer provides a single datasheet file (PCF8574_PhilipsSemiconductors.pdf) that lists specifications for multiple related part numbers.
Full PDF Text Transcription for PCF8574A (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
PCF8574A. For precise diagrams, and layout, please refer to the original PDF.
PCF8574; PCF8574A Remote 8-bit I/O expander for I2C-bus with interrupt Rev. 5 — 27 May 2013 Product data sheet 1. General description The PCF8574/74A provides general-pur...
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data sheet 1. General description 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. The low current co
PCF8574A Datasheet
