PCF8574_PhilipsSemiconductors.pdf
Datasheet Details
Part number:
PCF8574A, PCF8574
Manufacturer:
File Size:
367.27 KB
Description:
Remote 8-bit i/o expander.
Note:
This datasheet PDF includes multiple part numbers: PCF8574A, PCF8574.
Please refer to the document for exact specifications by model.
PCF8574A, PCF8574, Remote 8-bit I/O expander
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
PCF8574A Features
* 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 100 A current source
* 8-bit remote I/O pins that default to inputs at power-up
* Latched outputs di
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